Challenger C4P, Service Manual

Page 1: ...for COMPUTER BOARDS 502 505 527 540 If 542 s used i n hallenger Series MOOELC4P MOOELC4PMF 1 HWH IJ ...

Page 2: ...e View C4PM F 83 502 Board C4P 49 50 52 53 505 Board C4PM F 79 80 81 82 527 Board C4PMF 89 90 540 Board C4P C4PMF 44 45 46 47 542 Board C4P C4PMF 27 28 Pinouts 502 Board C4P 51 505 Board C4PMF 65 66 527 Board C4PM F 83 540 Board C4P C4PM F 32 33 542 Board C4P C4PMF 31 Schematics A15 Board C4P 61 502 Board C4P 55 56 57 58 505 Board C4PMF 67 68 69 70 73 74 75 76 527 Board C4PMF 84 thru 88 540 Board ...

Page 3: ...s line active in a low 0 state SCHEMATIC NOTES __ Circuitry not used in some versions Circuitry used in some versions Nominal value Ground rrln ChaSSIS Flame retardant resistor 9 See parts list Item numbers in rectangles appear in the atignment adjustment instructions Supply voltage maintained as shown In input Voltages measured with digitat meter Terminal Identification may not be found on unit R...

Page 4: ... 15 95 IIIIIITIFII 1333 S Chillicothe Road Aurora Ohio 44202 ...

Page 5: ...Chip Enable sequence only Caution Ground path on the boards is parallel to the B path on the opposite side of the board C4P C4PMF DISASSEMBLY INSTRUCTIONS Lay unit on a protective surface with top side down Remove six screws from cabinet bottom and remove cabinet bottom Remove ground lead from cabinet bottom I SYSTEM BASIC INTERNAL SYSTEM PERIPHERAL MONITOR LANCUAGE TRANSFER TRANSfER CASSETIE I A ...

Page 6: ...Y I 0 PERIPHERAL t t A TRANSFER _ _ _ _ _ _ __ _ _ _ _ r 0 INTERNAL t L SYSTEM TRANSfER MEMORY I 527 BOARD _ _ _ _ _ __ __ _ 1 r _ _ _ _ _ _ _ _ _ 540 BOARD COlOR BW INTERNAL VIOEO 0 TRANSfER 0 0 MEMORY GENERATOR 0 0 INTERNAL 0 At TRANSFER CONTROL I _ _ _ _ _ PART OF 542 AUDIO A15 BOARD BOARD POlUO A UOIO KEYBOARD GENERATOR 0 01 I o POlUO INPUTS DIGITAL _ __ t 0 TO O AC ANAlOG CONVERTER 1 ___ _ _ ...

Page 7: ...ONS For troubleshooting the 502 and 540 boards can be interchanged for servicing NOTE Care must be taken so that connectors on boards do not short to chassis or nearby boards 542 BOARD 582 BOARD 540 BOARD C4P BOARD I CHASSIS LAYOUT 3 ...

Page 8: ...ting the 505 527 and 540 board can be interchanged for servicing NOTE Care must be taken so that connectors on boards do not short to chassis or nearby boards 542 BOARD 582 BOARD 540 D A13 BOARD A15 BOARD 527 BOARD 505 DUAI1U C4PMF BOARD CHASSIS LAYOUT 4 ...

Page 9: ...540 Board P2 CLOCK OSC 502 BOARD Connect scope to U4 Pin 39 Waveform should be similar to WAVEFORM 34 This will check the operation of the clock section of U4 HH VIDEO SIGNALS 540 BOARD VIDEO OSCILLATOR CHECK Connect scope to U3A Pin 6 Waveform should be similar to WAVEFORM 14 To check operation of clock divider connect scope to U3B Pin 12 and Pin 9 Waveform should be similar to WAVEFORM 13 and 15...

Page 10: ...d be similar to WAVEFORM 26 and the negative pulse should be approximately 4 7 Sec wide For vertical sync connect scope to Pin 12 of U4A Output should be similar to WAVEFORM 27 and the negative pulse should be approximately 300 Sec wide VIDEO MEMORY AND VIDEO DEVELOPMENT 540 BOARD The four memory chips U2C U2D U2E and U2F are the B W memory U2C and U2F comprise memory for the top half of the monit...

Page 11: ...the question press RETURN Computer will display XXXX BYTES free etc If the BYTES FREE number does not represent the total number of your system this will indicate what memory or associated circuitry has failed The following chart indicates the bytes free count and the chips inVOlved To find the defective memory rams or associated circuitry observe bytes free indication on screen Go to the chart an...

Page 12: ...ume control setting of cassette MICROPROCESSOR CHIP CPU OPERATION 502 BOARD If BREAK key does not clear screen of random pattern processor may not be working Be sure key switch is functioning To verify processor is working a pulse indication taken by scope set on 1 LSec range or logic probe at address lines AO through A15 at U4 will verify No signal on an address line will suggest a defec tive U4 ...

Page 13: ...e operation of the clock section of U1 B Check the outputs of U4D Pin 3 and 13 Waveform should be similar to WAVEFORM 42 VIDEO SIGNALS 540 BOARD VIDEO OSCILLATOR CHECK Connect scope to U3A Pin 6 Waveform should be similar to WAVEFORM 14 To check operation of clock divider connect scope to U3B Pin 12 and Pin 9 Waveform should be similar to WAVEFORM 13 and 15 respectively VIDEO COUNTERS U5D U5B U5F ...

Page 14: ...similar to WAVEFORM 26 and the negative pulse should be approximately 4 7 Sec wide For vertical sync connect scope to Pin 12 of U4A Output should be similar to WAVEFORM 27 and the negative pulse should be approximately 300 Sec wide VIDEO MEMORY AND VIDEO DEVELOPMENT 540 BOARD The four memory chips U2C U2D U2E and U2F are the B W memory U2C and U2F comprise memory for the top half of the monitor di...

Page 15: ...1A U1D and associated circuitry To check timing pulses that select background color connect scope to U4A Pin 4 Output should be similar to WAVEFORM 3 and the negative pulse should be approximately 8f 1Sec wide CHIP SELECT LINES CE 0 thru 23 527 BOARD To check chip select lines bring the computer into machine language mode by depressing BREAK then M A six character alpha numeric display will appear...

Page 16: ...RM 45 To check clock input connect scope to U4C Pin 13 Insert minifloppy disk Output should appear similar to WAVEFORM 44 MINIFLOPPY CONTROL SIGNAL CHECK 505 BOARD Connect scope to J2 Pin 17 Output should be similar to WAVEFORM 58 Connect logic probe to J2 Pin 19 With Disk removed the logic probe will indicate a logic 1 While Disk is being inserted into Minifloppy the logic probe will indicate a l...

Page 17: ...ogic probe at address lines AD thru A15 at U1 B will verify No signal on an address line will suggest a defective U1 B or a problem on that address line Ie ROM MONITOR OPERATION CHECK 505 BOARD SYMPTOM DISK mode will not operate as D key is depressed The MACHINE mode operates properly This indicates a problem with one or more of these chips and or associated circuitry ROM MONITOR U2D MICROPROCESSO...

Page 18: ...Film Film Rl 220 51 1 4W RI 221 22 1080 R7 220 5 1 4W RI 221 22 1080 Flameproof Carbon Flameproof Carbon FUm Film 4700 S 1 4W Rl 472 22 1112 4700 5 1 4 11 Rl 472 22 1112 Fl ameproof Carbon Flameproof Carbon FUm Fflm 1000 51 1 411 RI I02 22 1096 Flameproof Carbon Film MISCELLANEOUS ITEM PART NAME PART No NOTES No J1 Socket SC 40Fl 40 Pin Interconnect to 502 Board J2 Socket SC 16FW 16 Pin tSI ItO BU...

Page 19: ...No I GENERAL PART No Q lINE LINE OJ 16 C 506 HLW50 16 TTlSXSOA O EI 3S1 ITVA lISO CAPACITORS REPLACEMENT DATA ITEM RAT1NG MFGR CORNElL SPRAGUE PART No No PART No DU8111ER MALLORY PART No PART No Q lINE GENERAL UNE Cl 6S 12SV SI C 680 COISED6S0J03 SX468 QWl 23 MIIA 680 C2 01 100Y l OS C I 03 WHFlSI WFIAllO QFl 91 IP8 SI0 OJ 01 100 1 l OS C 130 WHflSI WFl All 0 QF1 91 IPS SID C4 82 SI COl S J32QJ03 ...

Page 20: ...bon Ffl f1aveproof Carbon 16 1000 51 1 4 RI 10l 22 1096 Fll Flameproof Carbon 49 390 SI 1 4W RI 391 22 1086 film Flameproof carbOn 18 4700 51 114M RI 472 22 1112 Film Carbon FIl 050 220 lOS Ir W RI 221 22 1000 19 4700 SI 1 4W Rl 472 22 1112 Fl ameproof carbOn Carbon Film Film 0 4700 5 1 41 RI 412 22 1112 051 390 5 1 41 Rl 391 22 1086 CarbOn Fll Flameproof Carbon 4700 5 1 41 RI 412 22 1112 Fl1m Car...

Page 21: ... DATA ITEM TYPE MFGR GENERAL ZENITH No No PART No ELEORIC MALLORY RAYTHEON CA SYLVANIA THOROARSON WORKMAN PART No PART No PART No PART No PART No PART No PART No PART No D1 1H914 Q 1N914 GE 14 PTCZ14 REH 117 S10100 519 ECG519 TM519 WEP92 519 103 131 03 04 IN914 Q 1H914 GE 514 PTC2l4 REI 177 SI0100 519 ECG519 TH519 WEpg2 519 103 131 UlA S6821P IC M82l U 18 6502A IC 6502A U1C UID S68 0 IC 68850 UlE ...

Page 22: ... 16 n1SX5OA 0 1 351 TVA 1150 CAPACITORS REPLACEMENT DATA ITEM RATING MFGR CORNELL SPRAGUE PART No No PART No DUBllIER MALLORY PART No PART No Q lINE GENERAL LINE C1 1 lOV C8 10410 AG1201 QCI 223 HY 360 C2 1 lOV C8 10410 MAGI 201 QCI 223 HY 360 C7 1 lOV C8 10410 MAGI 201 QCI 223 HY 360 1 10V C8 10410 AG120t 0 1 223 KY 360 C9 1 10V C8 10410 MAGI 201 QCI 223 HY 360 C12 1 10V C8 1 0410 MAGI 201 QCI 22...

Page 23: ...11 R2 102 22 2096 Film Co o 13 220 51 1 411 Rl 221 22 1080 1000 51 1 2 11 R2 102 22 2096 Flameproof Carbon Carbon Film 3 10K 51 1 411 RI 103 22 1120 I 220 51 1 411 R1 221 22 1080 Flameproof Carbon Flameproof Carbon Film Film 44 10k 51 1 411 Rl 103 22 1120 I 220 5 1 411 Rl 221 22 1080 Flameproof Carbon Flameproof Carbon Film Film 45 390 51 1 411 Rl 391 22 1086 I 220 5 1 411 R1 221 22 1080 Flameproo...

Page 24: ...0 4700 51 1 4W Rl 472 22 1112 Flameproof Carbon Flameproof Carbon Film Film 14 470 51 1 4W RI 471 22 10 18 R91 4700 5 1 1 4W Rl 472 22 1112 Flameproof Carbon Flameproof Carbon F11m Film 15 470 5 1 4W RI 471 22 1088 9Z 4700 5 1 1 4W RI 472 22 1112 Flameproof Carbon Flameproof carbon FlIm film 16 470 51 1 4W Rl 471 22 1088 93 470 51 1 4W RI 471 22 1088 flameproof Carbon Flameproof Carbon film film 1...

Page 25: ...Y 360 ca 1 lOY CB 10410 HAG1201 QCl 223 HY 360 1 lOY CB 10410 HAG1201 QCl 223 HY 360 010 1 10V CB l0410 KAG1201 QCl 223 HY 360 011 1 l OV CB 10410 HAG1201 Q 1 223 HY 360 m 1 lOY CB l04l0 KAG1201 QCI 223 HY 360 C1J 1 10V CB l0410 HAG1201 Qtl 223 HY 360 C14 1 lOY 8 10410 HAG1201 Q 1 223 HY 360 C15 1 lOV 8 10410 MAGI 201 QCl 223 HY 360 1 lOY 1 8 10410 MAG1201 QCl 223 HY 360 C17 1 lOY C8 10410 MAG1201...

Page 26: ...C 74l512 UOK F 7404P lC 7404 6E 7404 51 7404 EC67404 TM7404 221 29076 SN7404N GE 7404 510404 ECG7404 TM7404 221 29016 USA DH742 IC 7420 GE 7420 510420 ECG7420 TM7420 221 29077 f 742OPC GE 7420 510420 ECG7420 TM7420 221 Z9077 DM74L5163N IC 74L5163 S1 74l5163 ECG74LS TM 4L516JA 5N74LS1S1N IC 74l5157 5K741SIS7 ECG74LS157 TM74LS157 F74LS157PC 5K14LS157 ECG74LS1S7 TH74L5157 SN72555 IC 555 GEIC 269 PTC1...

Page 27: ...CI 223 HV 360 04 1 10 1 CS I0410 HAGI201 QCI 223 HY 360 042 1 10 1 CB I0410 MAGI 201 QCI 223 H t 360 O4J 1 lOY CB l0410 HAG1201 QCI 223 HY 360 150 IKV lOS GP315 lOTS TIS CONTROLS All wattages 1 2 watt or less unless listed ITEM REPLACEMENT DATA FUNCTION RESISTANCE MFGR MAllORY TRW No PART No PART No PART No RS Bhs OK RP ID3 RVAD911VI OJ X260RID3B R9 Yideo 200 RP 201 0 Color OK RP I03 RVA0911 VI 03...

Page 28: ...VANIA THORDARSON WORKMAN ZENITH PART No PART No PART No PART No PART No PART No PART No PART No 01 D16 lN914 Q IN914 GE SI4 PTC214 REN 177 SOI00 SI9 ECG519 TH519 WEP9Z5 S19 103 131 UI UZ NaT26N IC 8T26 UJ U6 OO47SN 1C 747S GE 7475 SK7475 ECG7475 TH7475 U7 SN74LSl38N IC 74lSIJ8 SK74lS1J8 ECG74lS138 TH74lS138 1 0 00404N IC 7404 GE 7404 SK7404 ECG7404 TH7404 221 Z9076 U9 UIO 74LS193N IC 74LS193 SK74l...

Page 29: ...n J2 Socket SC 16FI 16 Pin JJ Socket SC 16fI 16 Pin 51 thru S51 Swl tch IU Keys Swl tch Keyboard P C Soan PC S42Bl Keyboard Asser lbly Rev B Socket SC 16fI 16 Pin IC Socket 10 used Socket SC 14fI 14 Pin IC Socket C4P C4PMF 582 BOARD PARTS LIST AND DESCRIPTION When ordering parh dole Model Pod Number ond DeJcription MISCELLANEOUS ITEM PART NAME No PART No NOTES Plug SC 2 tt 12 Pin l6 used P C BOln ...

Page 30: ...Colors 8522 Strandedl Avallable in 13 Colors CONTROLS All wattage 1 2 watt or less unless listed ITEM REPLACEMENT DATA No FUNOION RESISTANCE MFGR MAllORY PART No PART No R Fine Color Adj 1000 RP 1OZ UA13L SK1 000 19 79Z4 5 5 Nllllber on unit FUSE DEVICES REPLACEMENT DATA ITEM DESCRIPTION PART No BUSS LlTTElFUSE No PART No PART No TRW PART No BUZ CF6 SS3 DCl WORKMAN PART No DEVICE HOLDER DEVICE HOl...

Page 31: ...5 00V A Howard W Sam tlihAiii h 1 Photo C4P C4PMF 542 BOARD C4P 27 28 ...

Page 32: ... C4P C4PMF 542 BOARa 28 ...

Page 33: ...R 1 3 3 NST26N I f 6 00 I J 1 l04 J3 UI TRANS 1 1 0 CElYER N8T26N 1 6 L KD7 J 16 9 I 8 C4P C4PMF 542 BOARD KEYPAD B no 5 JlO 4 Jl D 3 liD 2 JlD I WI RS rS g _Rl fl 1 Li 1 P i G JI 0 G 1 1 Jj G I RO 1119 UII I 1100 4100 l I 01 12f C o IN914 1 00 KOO 2 1 6 DIS IN91 j f C I I lDI J 06 I I KDi U3 I 1 5 1 QUAD 011 IN914 R5 QUID 7f Cl LATCH 9 m UTtH I OMmS DIG 114914 DlW f Cl 1 6 I R6 l iOO 1 I f KDO N ...

Page 34: ...l b N C 9 151 IIC IIC 1 I NC HC 9 7 NC 10 6 N t II I r I r II 1l SR D1 C1 1 11100 PIJI I CS f NC PIJI I f NC Pin LCI f NC L iiESfT REO SEE CENTRAL PflOCESSINC UNI ON CPU BOARD 8 Pili HeiSE 2 RED J24 10 AU010 Pill Blk rif 1 1 U4 If 1 15 UIO 11 l iWS t H 14 S5 S5 1 T mElll J pm w I _rlJ_ NOISE 1 REO 1N914 47 f so 12 DA DM7475M CDUNlU 1 Kii6 6 111 56 1 S6 l 7USI93N NC f SI t R5 33K L 01 1 f Sl SI I N...

Page 35: ...3SN 13 AO I 1 iiii I 11 Iii II I 11 02 El iii 11 10 EJ II iii 10 0 06 0 U1 UI mS390PC CPA I RA CP8 I OGA RB I MS QDS 13 QI 11 QlA QI II QJA QlB 10 GNO QJB UII DM141SN I 1 1 GND 12 UJ THRU U6 14l 19 N 01 QI QO CPO CPU Ql Q3 GNO U9 UIO DO IS I TCD 13 rcu 11 Pl II D2 10 OJ 31 ...

Page 36: ... C LEAR 2114U Ai 8 AI 11 17 AS Al I AD UO 4 2 A UO II Al lro 11 CS lro 11 12 10 ON M 10 Ulf UIG UlC 11 CtOCfl ON U2D U2 U2F LlID Ultu4C 10 OCII UI H U2G U2H UJII Ull 74LS157N 74lSUPC SN1t92AH 74L 157PC SN1t16SN 4 I i6 SHIfT i6 lOAO II CLOCK II IA INHIBIT QA IB 14 I Q8 11 IY Il Il ON 10 12 12 ROUl QC 28 11 H 11 1 ROm QP zr l8 10 OH SERIAL IN 10 OUTPUT ON l8 ON lY ON OH OUTPUT 28 UlC U5I U5J USIt U6...

Page 37: ...lU 13 12 OA CLRS 3 3 He eKA DB 12 PRA 11 12 11 11 10 Q PRO 10 10 Q Q eNO GNO ij USA 06K GNO GNO U4f U4C U4 DMl4lS1UH H1425SS DM14LS139N f1tJOPC eu 16 GNO V IG ENABLE 16 He Cl CARRY OUTPUT 15 TlIICG R lSCHARGE ENABtE 2 15 He 3 OA OUTPUT THRESHOLD 18 ZA 12 CONTROL 11 DB 13 RESET VOLTACE 1YO 28 13 He 10 DC 12 U6A IV1 2YO 12 He 00 11 2Y1 11 E NABLE r 10 2V2 10 GNO GNO 2Y3 U6F LOAD f7402PC USI Usc USD ...

Page 38: ...form 1 Waveform 2 5mSec 3 8V 5mSec 3 8V Waveform 4 Waveform 5 Waveform 6 Waveform 7 Waveform 8 lOjlSec 3 8V Waveform 10 Waveform 11 O 2jlSec 3 9V WAVEFORMS TAKEN IN BASIC MODE UNLESS OTHERWISE INDICATED 34 ...

Page 39: ...8 I oov il 11 PART OF PUT Of U6J m04PC 1J61 f1t04PC I I I I II II I I l J AI PUTOF PARI OF un f7402PC U4I mom sl I d I IRIW PUT Of UQ f14G4PC unor PAIl Of II liZ NC I IIl fB Me l UliH S1C74OQN U4K F1404PC PI J5 Me 6 PI HC PIn 11 J 112 NC PI M 1I 1l2 N C PI r 112 jjj4 NC PI rlii PI PJJ2 liZ pq i2 21 I A PHOTOfACT STANDARD NOTATION SCH WITH i1ij J3iiiil i Howord W Soms Co In 1980 n I I I II V I PAiT...

Page 40: ... jf IO lJ lll4t l f il 121 102 2 1 I I i 2I PART Of 1 1 131 VDI I o NlTlfi 1 1 1 211413 f f i 121UH 121 UZG U2f I I fRAJG m t 1 VO 1 I 2114t 1 t VA2 PUIOF U4J SN74lS12N FOR COLOR KEYEO TROUBLESHOOTING SEE PAGES 5 THRU 13 FOR 36 ...

Page 41: ...O COLOR I s 0 i t iOl V l RO C38I29 DOl CHAIACTER CfNERATOR ii _ I ill l iDl tgp t _ _ t J I 12r i06 j DOIINH18I1 I F14174P C f iDl l II _iHO p 1OfOM T OF f74 l4Pt 1 1 1 1 l V FOR SCHEMATIC LEGEND AND NOTES SEE PAGES 91 92 INSIDE REAR COVER 37 ...

Page 42: ... 125 000 RI1 Bl NKIHC OK 17 I ll OK to O ___ R ADJ JOOQ 11 11 Me DHm QI lli RU9 WHEN USING YlIf ODULAH PART OF A15 BOARO C4P C4PMF 540 BOARD 38 ...

Page 43: ... Vi9 mco KID IiO AOA9 RIW A PHOTOfACT STANDARD NOTATION SCHEMATIC WITH nil BiliU iii Howard W Sams Co Inc 1980 C4P C4PMF 540 BOARO rCO l i r 39 j 1 540 BOARD VIDEO COLOR PAiT Of f14Q tPC I I v I IlZI BI I Z mI I 5 FOR COLOR KE FOR SCHEMATI ...

Page 44: ...R I I RJ I ml 1 2100 ell 01 0041 500V I PART Of 747 I U4F fliP fl J Jc PAliT Of U4C 14GBH PAIl J L 01 1 13 Wp I 12 K l 1 4 1 1 H8T26N I _i I 5 I r FOR COLOR KEYEO TROUBLESHOOTING SEE PAGES 5 THRU 13 FOR SCHEMATIC LEGEND AND NOTES SEE PAGES 91 92 INSIDE REAR COVER 40 PARr OF PUT Of l 6I f1402P USJ F Lrl 113 s I PART Of II1H F141 4PC ...

Page 45: ...F p u r Of I l 1102 Ilmusl t 3 32 f14021 t no t III oo 1 I COLOR Cl 1 nh 1 1 l NC 2 I i 1 I T I j1 f lt 1 J I KC pur O f 1 pm Of 1 PARr OF 114Oo1J C f14004PC F141 11 C HI I c I I r A1 c I I r l 1 1l41 1 1141 P J41 J 1 141 1 1l41 1 P J I 1 1l41 PIJ41 1 1 141 0 1 1 41 P IMI II 12 PU41 PIMI Il 1 1141 fi r oov 00 04 06 DL 03 DI RN Of NT Sl C4P C4PMF 540 BOARD I 41 WAVEF 42 ...

Page 46: ...form 15 Waveform 16 Waveform 17 O 2JlSec 3 8V lJlSec 4 0V lOJlSec 4 4V Waveform 18 Waveform 19 5JlSec 4 4V Waveform 21 Waveform 22 Waveform 23 2JlSec 4 4V lOJlSec 3 8V lOJlSec 4 3V Waveform 24 Waveform 25 Waveform 26 WAVEFORMS TAKEN IN BASIC MODE UNLESS OTHERWISE INDICATED 42 ...

Page 47: ... X 53248 TO 55295 POKE X 161 NEXT X END Type RUN Return Adjust R9 for best contrast but do not allow unit to lose sync Input of scope to 01 emitter adjust R5 for a peak level of 1 8 volts R23 SYNC Input of scope to 01 emitter Adjust R23 for a sync pulse of 75 volts pop R1D COLOR With a color background displayed on monitor connect scope to 01 emitter Adjust RIO for color burst signal of 6 volts po...

Page 48: ...PIN 25 J2 _ _ _ _ _ TO 542 BOAR D _ PIN _ J41 U4G PIN 1 TO BACKPLANE BOARD C4P C4PMF 540 BOARD A Howard W Sam ijii J3iiiiIGiA Photo 44 ...

Page 49: ... C4P C4PMF 540 BOARD 45 ...

Page 50: ... LOCATED ON OTHER SIDE OF BOARD C4P C4PMF 540 BOARD 46 ...

Page 51: ...Q1 C4P C4PMF 540 BOARD 47 ELE R17 Input R75 Conn Pres Press Press Press Type Type Type Type Input 6401 C4P CHI 48 ...

Page 52: ...ns 10 and 11 of J2 Press IIRESET Press lie Press RETURN Press RETURN Type 10 Print U Return Type 20 Go TO 10 Return Type SAVE Return Type RUN Return Input of scope to Pin 5 of U22 Adjust R75 for a positive pulse width of at least 500JLSec but not over 640JLSec Disconnect jumper r AC CONTROL J20 FINE CASSETTE VIDEO COLOR OUTPUT MONITOR DAC AUDIO ADJ C4P CHASSIS SIDE VIEW 48 ...

Page 53: ...C4P 502 BOARD 49 ...

Page 54: ...C4P 502 BOARD 50 m u OJ 5 U n I C 1IA8 E 2 3 I IV 6 lY2 7m 8 CNO I 2 3 fL 5 U 0 I 11 ...

Page 55: ...oc 10 ASl II AB2 11 A S lJ AS 14 A85 IS 1 86 16 AB1 11 11 1 89 l 1 810 tOUn 19 so U 001111 31 He 35 080 13 OBI 32 D Bl 31 DBl 30 DB4 29 DBS 28 086 21 081 2Ii ABIS 25 ABIt 24 Mill 21 ASll 21 20 BII VSS 21 G ND V T RIGGER DISCHARGE OUTPUT 4 RESET Q THRESHOlD COIIIROI vou Ul1 Va U ClRB II DB 12 CKB 11 I RB 10 Q8 Q U13 os 1 I 10 02 II OJ 12 G IIO 23161 11 21 All 11 AID 19 All II Il8 11 07 16 06 lS OS ...

Page 56: ...5 00V C4P 502 BOARD A H oward W Sam Cilii J3iiRf i3i Photo ...

Page 57: ...C4P 502 BOARD S3 w w 5 0 5 Progran tope w Amplltud Program S4 ...

Page 58: ...d from tape Waveform 34 Waveform 37 SOttSec S OV Waveform 40 O SmSec 4 3V Program transferred from tape Waveform 43 SmSec 4 3V Program to tape Waveform 45 Program to tape WAVEFORMS TAKEN IN BASIC MODE UNLESS OTHERWISE INDICATEO 54 Waveform 35 Waveform 38 Waveform 41 lmSec l lV Program transferred from tape Waveform 44 Tape mode prior to program storage ...

Page 59: ...ll 10 14121 T t f RTO 6 l t J 10K t U i 82pfT a r Rlt I 9n rR Q 11121 I C _tIOK IOfi I a D P t 1 16 11 1 oov CYClE I l lI g lOOV i r DDl I I i I L A PHOTO CT STANDARD NOTATION SCHEMATIC WITH i lillilisai Howard W Sems Co Inc 1980 C4P 502 BOARD ss ...

Page 60: ... SN1 20N PAar or I l O If A feuo 01 I1SI IS lO F 502 CPU BOARD i j l M 1 D1 j II C81 S OO 1 1 11 m I o I Il IU Il 1f 11 I1l 17 I I t Cp t f j f J O I I II soov w uu 19 1 220 FOR COLOR KEYED TROUBLESHOOTING SEE PAGES 5 6 7 8 FOI ...

Page 61: ...Ne ACIA SP I U4I AO 1 0 1 112 nUll If i I o OIi II 2114L 3 I f j OR fj RII 120 a PUl Pill O i l U16 000 PJJl N e 2 Pill r N e Pill 4 _ _ NC 6 PIl3 N e Pill g r 10 Pill N t 12 M 1II 3 12 O _ a l f II f i 2114l l 11 _ _I D7__b FOR SCHEMATIC LEGEND AND NOTES SEE PAGES 91 92 INSIDE REAR COVER 57 ...

Page 62: ... lAM IMI 11M II l o II lIl4L J l I 11M II 6l I lIItl l f I I lAM lAM l I I 2 o j 211U 3 I _ I __j i i L3 I _ Il jjj_ I 2I11l 1 II h W4U 1 III OO W 1 1 11 P J2 IIC C 1 J2 f C4P 502 BOARD 58 ...

Page 63: ...DN OUS t TXDMA CO U IIIUTlO II t nclJI INTERfACE AOAPl lI h Ul Ull UIl 0j A J J t I I j fliP flOP UI UI2 HI Hit Ul UIl U22 Ul1 r r lf 1IfW r i1 1I2VMA I UC SPKR DO TRANS CEIYEI U1H Ull lf I _ _ 542 KEYBOARD S I J B lATCK c emu u tJ6 UI U 2 DECOD E U 1 U t7 I I PRQGRAMMA8U A UOIO Ul U4 U9 UII I I o AUDIO O ICJTA l M DAt 10 AKAlOG CO fYERT 1I f t i L _________________ _ C4P BOOY BLOCK DIAGRAM ...

Page 64: ...U4H U4J U4K II5A lI68 U6D J6l COlOUlNC HAS Ula U2A U28 U2K UlD UlG U4C UtE IMH COLOR BACKGIIOUND MEMORli GEPIERATOI Ule UIH U2 UU t ___ _____________ _ ___ ___ _________________ ________________________ ______________________________________________ C4P BODY BLOCK DIAGRAM 60 JI ...

Page 65: ...86 12 JI J4 1 1 1 Jl 2 au 10 Il 12 Il Il 4100 J PO __ FIR D4i 4 PAl PART OF 1 1 0 CONNECTOR BOARD A15 W r o IHrRU E 5 4700 II 2M 2M D1 f n CAII mlO Jl 220 w f MISC 1 3 I Jl B oov G II JI I II rum OUT r c c J8 Ja JI JI JI 6 lOOO NOT INSTALL R9 AND JUM PERS ONLY fOR SPECIAL PIIII lTER JI r 1 NC JI JI Jl II Jl NC j II 12 II Il II II Il II II 12 II II I 2D JI 21 RS232IN 9 Jl 19 3 DCD II 1 8 19 us __ 2...

Page 66: ...KEY PAD PORT J 1 PIN 1 TO 542 BOARD B PIN 1 JOY PORT KEY PAD STICK B A B PIN 1 C4P A15 BOARD A Howard W Sam ilii J3l1iili3i Photo 62 r ...

Page 67: ... lmH h1 scm US U6 1I1 lIZ I 0 IRIW DECODER AnA U1 U S I PRO UDIO MMA81 AUDID DIGITAL 0 Ul U4 U 11 TD ANUDe I CDNVERTER OAt _ C4PMF BODY BLOCK DIAGRAM clJ emu Ull lIlG 0 I OtI I Ul r OEeoons 111 UIF U2C Ul2 iMA UX U5H THIIO U5l lSl U4E 1I4F U M U61 505 CPU 9lVMA WATi t CSfl r ID r M t TRANS tAl LA3 1 0 2 ViolA CElVER 100 1J3 u4 10 IOAQ 10AI _ _ N l CEI iEt UJH Ull KD l 540 VIDEO CO t I COlOR J SYNC...

Page 68: ... BOUO 1 51 eLK 1 RstlZ 1 115232 OUT I crs 1 15101 I OCO 1 __WRITE DATA SU DATA F L o P P t _ lI lECtORIYETI I Aum S l E S AS willIE E N ABLE mmID FAun TRAC 00 IN on mrw WRITE PROTECT _ _ _ _ 540 VIOEO COLOR BOARO COfHIIOl DECODER UIC Ul 04UI4G U4H IHI l IU 1 I50 1 I58 tJO U6I VIDEO CLOC COUNT RIEHCODEII U3A U3C UU U4C U4E U4f U4H USA U5K U6D U6J I CKAUCHR MEMDRY GENEUTOR U28 U2H U3D U3GU4C UU U411...

Page 69: ...fS 40 GNo CIS 24 F141 51 S V et 16 ROY 01 lOUT iRQ He SYNC eo 10 AS II AS2 12 ASl 13 AS4 4 ABS 15 A86 16 AS7 11 AB8 18 An 19 ABID 20 AS II UI ONO ONO 0210UTl 39 SO 31 0 INI 37 He It C 35 R rw 34 oBO JJ DB 32 082 31 083 30 DB4 29 DBS 28 086 21 DB7 26 Am 25 A8 4 24 ASll 23 AB12 Z2 VS5 21 MCI4891SN1S189N ule SNUI7N F14l7PC U 2B UJA UJB U4A 0 CRX CT 15 TXD iffQ GS ffi 10 CSI II RS Ule UID DCo 23 00 22...

Page 70: ... SN1t200 SN1tLSI3811 CPA V V tt AD V 16 16 iiO 11 iA CPS 11 AI PR 0 11 Oi ODA MR A1 OL Q Oi ODB 13 GNO 13 OIA MS 12 El OJ 12 V 12 OlA OIB II El 04 11 PR 0 11 OlA 01B 10 USH U51 iij 0 10 ct Q 10 ON OlB GNO 06 USE USF USC U5l U6C US F7416JPC 749311 S1I140211 mON CLEA V 16 INI UTB IN PUI A V CLOC CA RY 13 OUTPUT 11 01 II II 3 OA 01 OA 12 11 DB II 00 11 11 II 10 OC V GNO 10 10 Me 00 II 08 7 G NO NABLE...

Page 71: ...ARD NOTATI ON SCHEMATIC W ITH liIIi J3iiii f i Howard W Soms Co Inc 1980 NC b T r r 3 A L CI j uu BUFfER a N U L _ L __ I L L HC lOf NC NC 3 NC 5 NC NC 5 V I 1 I PA DOf S iI BUffER MtW 1 MC8T95P FOR COLOR KEYED TROUBLESHOOTING SEE PAGES 9 THRl 67 ...

Page 72: ...I Of I Nt PUIOF U40 IlItHI MC6USf MCfT I5P I RIO 1 SEE PAGES 9 THRU 13 T or 11 10 PAR Of U6F SN1402N PAIIT OF 1151 OM7104M U5J oov I ll Wi Wi FOR SCHEMATIC LEGEND AND NOTES SEE PAGES 91 92 INSIDE REAR 68 ...

Page 73: ...Of PART Of un 1 1404 U4f OMl404N W I co I AO lOAD L W tl 0 I IMH Ii TtANSm u f IQIlllW I tr f AI v v f 6 J t DA IJ U OOI f PART Of s oov PARTOF r p 1 1I U lE 51 11410 UU f7404f t t H r l LA 0 0 00 Al troo till LA _ Ll U3Gll PART OF T U5l 51 174101 lIAMSC I E _ 1 l_ Ig 1III1ZW1 I p Oo I v Ol 1 13 12P 1001 l PART O f 01 1 l U 5l S 174101 PAn OF r oo un OM7404N NC 10 8 Me 16 I I v 00 1 I 1 2VMA PUT O...

Page 74: ...I FLOPPY PlIIMIER MOOEM C4PMF 505 BOARD 70 r B f m __ A______ f_ r m p u l A _ M E 1 1 NC E 13 prj NC foE PIJI It NC SE c IS pm NC foE piJI 16 NC E 11 PIJI Mc i E 2 1 pm NC E Pill 21 NC foE n Pili S E pIII E pm 26 sow r I SOURCEt t ...

Page 75: ...veform 36 Waveform 37 O 2 lSec 3 0V O 2 lSec 3 2V Waveform 38 Waveform 39 Waveform 40 r I I I I r JJUJUJL Waveform 41 Waveform 42 Waveform 43 O 2 lSec 4 0V Waveform 44 Waveform 45 Waveform 46 WAVE WAVEFORMS TAKEN IN BASIC MODE UNLESS OTHERWISE INOICATEO 71 ...

Page 76: ... 48 Waveform 49 Waveform 50 Waveform 51 Waveform 52 Waveform 53 Waveform 54 Waveform 55 lmSec 4 4V Waveform 56 Waveform 58 10mSec 4 4V O lSec 4 4V 50mSec 3 2V WAVEFORMS TAKEN IN BASIC MODE UNLESS OTHERWISE INDICATED A PHOl ...

Page 77: ...VIDEO BOARD idEMSOAllQ 121 8AC PLA N E __________________________________________ ___ __________________________ _ J NOT E fOR 8 DISK DIVIDETIM EBY 4 A PHOTOFACT STANDARD NOTATION SCHEMATI C FOR COLOR KEYED TROUBLESHOOTING SE FOR SCHEMATIC LEGEND AND NOTES SEE WITH H 13 iii i Howo W om Co 0 1980 C4PMF 505 BOARD 73 ...

Page 78: ... 1 PIJ2 7 16 161 1 _ ___ _ iiiiUiEl i4 F L o P P I ul __________ r __ ___ _ E S nl 0 00 HOOTING SEE PAGES 9 THRU 13 AND NOTES SEE PAGES 91 92 INSIDE REAR COVER 1 C4PMF 505 BOARD ...

Page 79: ... 390 D U161489 O 1 I 0 1 f 04 8 w21 SOOVR1 ho W 1 f 05 4IT I I j 1 ____ _ 16 r U1I l 1 rpA r o _ug t l ______ 1 jJlL l C6 r J A151 0 01 5 1H522fi 1331 1I3S 12PF l OOV CONNECTOR 1 OUl 390 220 BOARD HC 2i W30 1137 140 U w so ttC 1 10 W31 1 l11 1000 5 00v W37 _ _ _ _ c s f I t wnt III Rl9 IRiW tIP j OQ I 1 I I IHI I I 2 r soov r 10K v 1000 2H522ti tT OWER SUPPLY oov 1 I Y tu LHC OUVl I sot CIO II 4 C...

Page 80: ...M C 1s e CI C2 l PORT i II l II if i m J 41 uf I SOO I 1 I 14 01 0 11 1914 M SOOV It J 4PORTB 5 00 1 S OO I Hem IH91 L TI i H C 4 J S RVl Si _______ _ HC MC I PORT S J1 POnA r 3 PORT A SOOV I SIIII I HC HC I II PORTli J3 1 MC H C I r 6H C t _ _ 2 _____ __l8 __ ___ _ _ _ __J J3 ST Clk f__ _ W21 Jl l2 W29 t SIIeu H e 14 J 19 1 f O T S2l1 r F c g c n c n Jir l __ 3 g 19 1 A15 110 __ _ _ 19___ __ JI J...

Page 81: ... U3C Pin 4 Adjust R52 for a negative pulse width of 400nSec R57 RX CLOCK Remove floppy disk cable J2 Connect a jumper from Pin 9 of J2 to Pin 10 of J2 Input of scope to U4C Pin 13 Adjust R5 for a positive pulse width of 1l Sec Remove jumper and reconnect J2 R58 RX OATA Remove floppy disk cable J2 Connect a jumper from Pin 9 of J2 to Pin 11 of J2 Input of scope to U4C Pin 12 Adjust R58 for a negati...

Page 82: ...78 J PIN 1 TO 542 BOARD KEY PAD B PIN 1 JOY PORT KEY PAD STICK S A B PI 1 C4PMF A15 BOARD A Howard W Sama Ii Biliiii3 Photo R3 R5 TO 505 BOARD PIN 1 ...

Page 83: ... Q1 C4PMF 505 BOARD A Howard W Sam lii 13i11 li3 Photo 79 ...

Page 84: ...C4PMF 505 BOARD 80 ...

Page 85: ...C4PMF 505 BOARD C4PMF 81 82 ...

Page 86: ...C4PMF 505 BOARD 82 JMTA ...

Page 87: ... THRU OS EI THRU EI FI1HRU FI AI AIO 527 BOARD PINOUTS V C 16 IS 11 10 FINE COLOR ADJ 14S1lll C mSllII C I AO 16 1 AI iii IS iii j 02 El 00 11 01 I 07 iil 10 ONO iii 7 G NO C9 09 E 9 F9 SH7410J V 14 ElO F1 J VIDEO MONITOR 11 10 ONO 1 DAC F14I S04PC 010 AC CONTROL AUDIO 0 11 10 C4PMF CHASSIS SIDE VIEW 83 ...

Page 88: ...7 1 P Ili Dl0l r D101 PIJI o r o PIJI _7 _M05i __1 10 1 111 11 vMO __1 W 7 Or r _ I Ui f C r ___ PIn He 18 ocooi pm 16 PIJI f C 13 He Pili He 15 He A PHOTOfACT STANDARD NOTATION SCHEMATIC 7404 Ji 1 L Of fB 7404 Jl IL PARTOF EG UCIO 74l S04 9 8 r m 9fBl L L _ A7 PARTOf EB UEll 7404 r j t PAR lOf EB 0 10 urlO 7404 4__ II 11 PAlrQF EB UFIO 7404 r J 6 __ 11 IH1S 1VIIA 00 0 15 19 WITH ijUJaiiiiiiii How...

Page 89: ...I 16 AS 15 A9 17 17 RlW lIE 1 Il 2114 12 1 i52 13 1 6 UAID 12 TRANSCEIVER 10 1126 14 oov oov RlW lJ UE6 12 2114 R3 AS 11 A7 AI IS A9 RJ un AM W4 10 RlW S8 10 14 UF6 13 m4 12 A7 17 AS 16 PUT Of UCIO 7 10 AI6 Al _ WAi T tt P2YMA _ _ 4 _____ _______J R1W 4 oo AI6 A19 A PHOTOf ACT STANDARD NOTATION SCHEMATIC WITH I3 i 1 1 Howard W Soms Co Inc 1980 SH POWER SUPPlY 5 00 1 DC POWER S UPPLY C4PMF 527 BOAR...

Page 90: ...4 1 OF UCI 140 1lf lI11 jf ID j1l Z114 2114 2114 2114 2114 211t IS 2m Z U PART OF 2114 2114 UD10 74LS04 til I J I til I tJ6 I m I I I I I I 211t 21 14 _ JE y FOR COLOR KEYED TROUBLESHOOTING SEE PAGES 9 THRU 13 FOR S ...

Page 91: ...114 101 J 01 1I U j1lIlt UU 2114 UCI lIt4 2114 PART Of UDIO 14lS N PUTOf uno SW1tlOJ UOI 1l1 1_IC 5 2 AM IJI 2114 1211 106 06 j12 2li1 UDI III1 1O llll UD1 AM WI 2114 21 IIIf 101 L IC j 1l P ART Of UDIO 74l S04 PART OF UEIO S1II74 0 D2 IfI9 t _ _ FOR SCHEMATIC LEGEND AND NOTES SEE PAGES 91 92 INSIDE REAR COVER 87 ...

Page 92: ... 211 1 914 utI 2114 2114 Il Ill 11 11 2114 1 1 _ 1_ j UT OF uno SJr 41OJ utI 21U OJ 1 914 OJ 2114 0 1II4 1l OS 3 I1l 11 o I 111211 01 1 1 PAlIT Of UDIO 14lSG4 os 2114 0 C4PMF 2114 ucs 2114 527 BOARD 88 ...

Page 93: ...C4PMF 527 BOARD A Howard W Sam 1 131m h31 Photo 89 ...

Page 94: ...527 BOARD 90 LEGEND AO A15 BS BSO B CSO CS7 CTS 00 07 O IRQ MSO MS2 NMI ROY RESET RTs R W RX ClK RX DATA SS TX ClK TX DATA VMA 00 02 02 VMA Any B numeric active i LEGENI AO A15 ClR CNT CSP I CTS CTSM CSS FCX ...

Page 95: ... Clock Port A FCB1 FCB2 Real Time Clock Port B 00 07 Data OCO Data Carrier Detect FOXX Machine Language FEXX Machine Language FFXX Machine Language IOAO IOA1 1 0 Address 1001 1007 1 0 Data IOR W I O Read Write 1002 VMA 10 Phase Two Valid Memory Address IRQ Interrupt Request lA2 lA3 Latched Address NMI Non Maskable Interrupt PAO PA7 Port A PBO PB7 Port B RES Reset RTS Ready to Send R W Read Write 1...

Page 96: ...Q Color Frequency CVRO ColorVideo Read Direction CWE Color Write Enable 00 07 Data 00 Data Direct OEB Delayed End Blank OOT INHIBIT Dot Inhibit 92 540 BOARD CONTINUED OOT SHAPE Dot Shape ENO BLANK End Blank G Green HS Horiz Sync 100 103 1nternal Data KBO Keyboard Direction KBE Keyboard Enable KOO K07 Keyboard Data NI Noise Interval R Red RO R7 Read R W ReadlWrite SE Select Enable Sl Sync S4 S7 Syn...