Jands Event 4 Technical Manual Download

Page: 38 / 49

Jands Electronics P/L

40 Kent Rd

Mascot NSW 2020

Australia

Ph (02) 9582-0909

9-Jul-1999 16:37:42

H:\LAB\EVENT4\CIRCUIT\Ev4mast3.sc1

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Sheet

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EVENT4 MASTER CARD

EV4MAST3

Drawn By:

R25

2K2

R24

2K2

IC22D

74HC14

IC22F

74HC14

C44

10nF

C42

10nF

C40

10nF

DIR

IC25

74HC245

DIR

IC24

74HC245

IC22A

74HC14

IC22E

74HC14

IC22C

74HC14

IC22B

74HC14

CIN

U/D

CLK

RST

COUT

IC21

4516

CIN

U/D

CLK

RST

COUT

IC20

4516

CIN

U/D

CLK

RST

COUT

IC19

4516

R10

2K2

R11

2K2

R12

2K2

R13

2K2

R15

2K2

4K7

10K

22K

2K2

4K7

-12

VCC

C24

100nF

100R

DIR

IC1

74HC245

DIR

IC10

74HC245

DIR

IC11

74HC245

CLK

IC3

74HC574

CLK

IC2

74HC574

INH

VEE

IC6

4051

100R

+12

-12

Vcc

Vin

INT

Vrf(-)

OFL

Vrf(+)

DB0

DB1

DB2

DB3

DB4

DB5

WR/RDY

DB6

MODE

DB7

IC8

ADC0820

VCC

IC5

74HC138

IC23

74HC573

IC13

74HC573

IC12

74HC573

10uF

DIR

IC4

74HC245

DIR

IC7

74HC245

DIR

IC14

74HC245

10uF

R14

100K

VCC

R38

10K

R39

10K

R40

10K

R41

10K

R42

10K

R44

100K

R45

100K

R46

100K

R47

100K

R48

100K

R49

100K

C41

10nF

C43

10nF

C45

10nF

R43

10K

IC16

74HC573

VCC

R16

2K2

R18

22K

IC9A

TL072

IC9B

TL072

VCC

SFT

GND

Card

TBG

TBR

SCR

FIX

FCS

CLR

GRP

CONTRAST

S/T

40 X 2

LCD1

LED6

LED7

R/W

GND

ALEL

R/W

ALEH

-12

+12

LED5

Hold

Rate

Fixt

DBO

ASG

ASR

HDR

HDG

SW2

SW3

SW4

SW5

SW6

$8E

$8D

$8C

$8B

$8A

$8F

$8E

$8D

DD0

DD1

DD2

DD3

DD4

DD5

DD6

DD7

DD0

DD1

DD2

DD3

DD4

DD5

DD6

DD7

DD0

DD1

DD2

DD3

DD4

DD5

DD6

DD7

S(1..37)

L(1..24)

F(1..7)

VSS

VCC

R/W

LCD0A

LCD40X2

LCD0B

LCD40X2

GND

VCC

ALEH

VCC

ALEL

-12

+12

CONN1

IDC20

vcc

-12

+12

GND

R/W

ALEH

ALEL

DEC

GND

VCC

IC27

EV4GAL

GND

R/W

ALEH

ALEL

DEC

GND

VCC

IC26

EV4GAL

/AW

/AR

LC0

/BUS

EnL

EnH

/L3

/L2

/L1

L10

L11

L12

L13

L14

L15

L16

L17

L18

L19

L20

L21

L22

L23

L24

R17

2K2

R19

2K2

R20

2K2

R21

2K2

R22

2K2

R23

2K2

R26

2K2

R27

2K2

R28

2K2

R29

2K2

R30

2K2

R31

2K2

R32

2K2

R33

2K2

R34

2K2

R35

2K2

R36

2K2

R37

2K2

VCC

GND

ENC1

ENCODER

VCC

GND

ENC2

ENCODER

VCC

GND

ENC3

ENCODER

VCC

FADTOP

FADBOT

CONN2

4PIN

CONN3

4PIN

VR1

5K TRIM

DAC

DD0

DD1

DD2

DD3

DD4

DD5

DD6

DD7

S10

S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

S30

S31

S32

S33

S34

S35

S36

S37

R111

47K

R110

470K

R108

4K7

R109

10K

VCC

Summary of Contents for Event 4

Page 1: ...Event 4 Technical Manual Revision 1 19 07 99 ...

Page 2: ...aged to try to correct the interference by one or more of the following measures reorient or relocate the receiving antenna increase the separation between the equipment and receiver connect the equipment into an outlet on a different circuit from that to which the receiver is connected consult the dealer or an experienced radio television technician for help This Class B digital apparatus complie...

Page 3: ...or Card 3 1 3 1 1 Boot ROM FLASH and RAM 3 1 3 1 2 Trim procedure 3 1 3 1 3 Battery 3 2 3 1 4 Logic 3 2 3 1 5 Desk Lamp Dimmer 3 2 3 1 6 DMX Outputs 3 2 3 1 7 Keyboard 3 2 3 1 8 Expansion Bus 3 3 3 2 Front Panel Cards 3 3 3 2 1 Card Select Jumpers 3 3 3 2 2 LCDs 3 3 4 DIP Switch Settings 4 1 5 Boot ROM inbuilt menu self tests setups etc 5 1 5 1 Entering the Boot Menu 5 1 5 2 Menu Usage 5 1 5 3 Boo...

Page 4: ...X In 5 6 Vers 5 6 Trash RAM 5 6 Boot 5 6 6 Fault Finding Table 6 1 7 Maintenance 7 1 8 Technical Data and Specifications 8 1 Event 4 Specifications 8 1 9 Glossary of Terms 9 1 Appendix A History of Modifications 9 1 Appendix B Connector Pinouts 9 1 Appendix C Spare Parts 9 1 Appendix D DMX to MIDI adaptor 9 1 Appendix E 2 x DMX MIDI signal combiner 9 1 Appendix F Circuit diagrams 9 1 ...

Page 5: ...on 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4CPU1 Circuit diagrams 9 2 EV4MAST3 Circuit diagrams 9 3 EV4ASN3 Circuit diagrams 9 4 EV4PRE3 Circuit diagrams 9 5 EV4PAL3 Circuit diagrams 9 6 BKLTSML0 Circuit diagrams 9 7 ...

Page 6: ... is achieved by inserting a diskette with the new operating system and selecting the appropriate options in the boot menu The boot menu also provides other functions including console self tests Note that static sensitive devices are used throughout the console and normal handling precautions should be applied during service Note also that connections should never be made with the power switched o...

Page 7: ...iver 5mm nut driver 1 Posidrive screwdriver 2 Posidrive screwdriver 2 2 Disassembly Access to the console is through the base To remove the base place the console face down onto soft padding Using the 2 posidrive screwdriver remove all and only the silver screws leaving the four black screws The base can then be lifted away To remove the PSU CPU assembly disconnect all cables to the CPU and PSU an...

Page 8: ...lled including the DMX output connector Also check that the DMX connector wiring is located within the cutout section of the CPU card The CPU trim procedure should be followed if either the CPU or power supply have been changed or if the trim has been inadvertently adjusted Refer to section 3 1 2 Test the console fully before installing the base This includes the disk drive desk lamps back lights ...

Page 9: ... 1 Boot ROM FLASH and RAM The CPU memory consists of a Boot EPROM IC25 four FLASH ROMs IC11 IC12 IC13 IC14 and four static RAMs IC16 19 The CPU card has the capacity to be fitted with a maximum of 2MBytes program memory four x 29F040 devices and 2MBytes show memory four x 512Kbyte devices Only AMD brand 29F040 FLASH devices should be used with boot software versions up to 0 5 3 1 2 Trim procedure ...

Page 10: ...d by connecting an appropriate header to CONN3 If it is necessary to reprogram these devices in the field follow the instructions supplied with the kit 3 1 5 Desk Lamp Dimmer The desk lamp dimmer circuit consists of a PWM switching circuit protected by a PTC polyswitch The polyswitch will trip under overload conditions when it does LED L6 will extinguish Due to the nature of the polyswitch it is n...

Page 11: ...set and Assign card selects the address of the card in the system When installing new cards ensure that the replacement card has its jumper in the same position as the card it is replacing The correct jumper position for a Preset or Assign card is equal to its position from the left eg the left most Preset and Assign cards have their jumpers set to 0 the next have it set to 1 etc Master and Palett...

Page 12: ...TE At the time of printing all DIP switches should be off for normal console operation Dip SW1 no function Dip SW2 no function Dip SW3 no function Dip SW4 no function Dip SW5 no function Dip SW6 Enable main code diagnostics Dip SW7 Execute software from RAM use for development only Dip SW8 Reserved ...

Page 13: ...ons are selected by pressing one of the five buttons above the programmer LCD or press EXIT to return to the previous menu 5 3 Boot Menu The following menu options are available in the opening menu 1 Continue 2 Load FLASH 3 Test 5 3 1 Continue Use this option to exit the boot menu and continue normal execution into the main operating software Use this option if the boot menu has been entered by mi...

Page 14: ...the edge of L5 and L4 The data can be used to verify the correct operation of the CPU control signals The sequence of operations performed during this routine are shown in table 3 Event Signals of interest Comment Set Green LED L5 on L5 CRO Synchronisation Set Green LED L5 off L5 CRO Synchronisation Move 01 to 40010004 IC16 pin 29 Write to RAM bank 0 byte 0 Move 02 to 40010005 IC17 pin 29 Write to...

Page 15: ...n 13 PC Memory Write Move 606A0000 to CPU IC65 pin 14 PC Memory Read Move 55 to 60000000 IC65 pin 50 PC IO Write Move 60000000 to CPU IC65 pin 49 PC IO Read Table 3 Bus exercise event summary Figure 1 shows the relationship between L5 IC16 WR and the CPU DACK signals as measured while running this test Figure 1 Sample waveform during Bus Exercise Trace 1 L5 Trace 2 IC16 Pin 29 WR Trace 3 IC1 pin 4...

Page 16: ...ption to test the ports of the CPU card When selected the following options are displayed 1 VGA 2 DMX1 3 DMX2 4 MIDI VGA Test bars are displayed on the VGA and LCD screens for the purpose of checking colour VGA and grey scaling LCD Press enter to return to the normal menu when the screen results have been viewed DMX 1 The DMX1 output is connected to the MIDI input via the adaptor cable shown in Ap...

Page 17: ...in Table 4 and can be used to verify correct operation of the majority of the front panel controls In general a pressed switch is indicated by its associated LED or the LCD if no LED available and fader values are displayed on the associated LCD or channel LED The Channel master levels and preset faders operate in familiar two preset mode with the levels appearing at both DMX outputs This test is ...

Page 18: ...input Note also that the data pattern changes each time the test is run Press Exit to terminate the test Vers The software version of the test routines is output to L4 and L5 in flashes The green LED L5 flashes once at the start of the test The version is then displayed in red LED L4 flashes The version is also displayed on the master LCD at startup and for this reason this test is mainly for use ...

Page 19: ...kette Disk not DOS format Format on a PC compatible computer DOS 3 0 and above Diskette damaged Replace diskette Poor quality diskette Use quality diskette Diskette drive damaged Replace diskette drive Fixture not available for patching Fixture library in console not up to date or corrupt Load latest library from library diskette No DMX output Incorrect patch Check patch Incorrect receiver address...

Page 20: ...most all parts of the console can be damaged by physical abuse however there are a number of things that can be done to prevent this kind of damage Cover the console when not in use eg before after and between sets ALWAYS insert a diskette into the floppy disk drive when the console is to be transported This prevents damage to the drive mechanism Do not use spare audio lines for DMX cable If so th...

Page 21: ... Out Two Desk Lamps VGA Inputs Keyboard AT type MIDI In Control channels 36 preset fader 360 24 preset fader 240 Data Protocol USITT DMX 512 1990 electrically conforms to RS485A Memory capacity 2Mbytes Disk Drive IBM format DOS 3 0 and above 1 44MB high density Desk Lamps 12 volt 5 watt x 2 maximum output 10W total Construction All steel chassis with lexan polycarbonate covered control surface Dim...

Page 22: ...tion of a digital control signal Converter DIP Dual In line Package A device package format with 2 parallel rows of pins EL Electroluminescent A type of backlight that uses high voltage EPROM Erasable Programmable Read Only Memory A type of memory that is not intended to be re programmed in circuit FLASH Flash RAM A type of memory very much like EPROM but which is designed to be re programmed in s...

Page 23: ...of time dependant upon the required output power RAM Random Access Memory Memory in which the data contained within can be accessed in any order The term RAM generally refers to memory that can be read and written to by the system ROM Read Only Memory Memory that cannot be changed by the system SMD Surface Mount Device A miniaturised leadless component mounted on the upper or lower surface of a ci...

Page 24: ...Appendix A History of Modifications A 1 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL Appendix A History of Modifications Serial Number Modification ...

Page 25: ... MANUAL Appendix B Connector Pinouts Front Panel Card Bus Connector View from component side Palette Assign Master Cards FDD Power Connector Main Power Connector CONN8 D0 GND D3 D4 GND D7 R W 5 MUX 12 5V GND GND NC GND D1 D2 GND D5 D6 5 ALE DS 12 5V GND 12V GND 5V 12V GND DIM ...

Page 26: ...HG HDSEL RDATA WRTPRT TRK0 WGATE WDATA STEP DIR MTR1 DS0 DS1 MTR0 INDEX DRATE1 NC DENSEL GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND DMX1 DMX1 GND DMX2 DMX2 GND ACK 12v A2 A3 GND A6 A7 GND A10 A11 5 A14 A15 GND A18 IO GND R W D7 GND D4 D3 GND D0 INT A0 A1 12V A4 A5 GND A8 A9 GND A12 A13 5 A16 A17 GND NC RESET GND D6 D5 GND D2 D1 GND ...

Page 27: ...ECTIONS PIN No FUNCTION 1 NC 2 GND 3 V DESK LAMP CONNECTOR MIDI CONNECTIONS PIN FUNCTION No IN OUT THRU 1 NC NC NC 2 NC SHIELD SHIELD 3 NC NC NC 4 IN OUT OUT 5 IN OUT OUT MIDI CONNECTOR KEYBOARD CONNECTIONS PIN No FUNCTION 1 KCLK 2 KDATA 3 NC 4 GND 5 5V KEYBOARD CONNECTOR 1 3 3 3 2 2 5 5 2 4 1 4 1 ...

Page 28: ...L MANUAL DMX CONNECTIONS PIN No FUNCTION 1 SHIELD 2 SIGNAL 3 SIGNAL 4 NC 5 NC DMX CONNECTOR VGA CONNECTIONS PIN No FUNCTION 1 RED 2 GREEN 3 BLUE 4 NC 5 NC 6 RED RETURN 7 GREEN RETURN 8 BLUE RETURN 9 NC 10 GND 11 NC 12 NC 13 HSYNC 14 VSYNC 15 NC VGA CONNECTOR 5 3 4 1 11 6 2 1 ...

Page 29: ...60mm Alps ZRS0200 Fader knob black white line ZZK0400 Fader knob black blue line ZZK0450 Fader knob black green line ZZK0460 Fader knob black red line ZZK0470 Fader knob black grey line ZZK0480 Encoder HRPG ZRP0450 Encoder knob ZZK1210 Switch Schadow SERU ZSW0450 Switchcap SRKL Schadow ZSC0050 Switch Cherry MX1A A1NW ZSW1500 Switchcap Cherry no LED window ZSC0500 Switchcap Cherry with LED window Z...

Page 30: ...Appendix C Spare Parts C 2 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL Assign card complete YPC175 Master card complete YPC176 CPU card complete YPC174 ...

Page 31: ...X2 output 4 5 FromMIDIoutput R6 220R R7 220R VCC 5 4 To MIDIInput VCC 5 4 FromKeyboard Input C1 100nF Appendix D DMX to MIDI adaptor A DMX to MIDI adaptor cable is required to run some of the Auxiliary tests contained in the Boot ROM The adaptor should be wired as shown DMX pin MIDI pin Detail 3 5 connect with 220R 0 25W 5 resistor 2 4 direct connection 1 2 direct connection Appendix E 2 x DMX MID...

Page 32: ...Circuit Diagrams and Overlays F 1 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL Appendix F Circuit diagrams ...

Page 33: ...Circuit Diagrams and Overlays F 2 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4CPU1 Circuit diagrams ...

Page 34: ...DIR 1 IC29 74HC245 R14 10K R30 47K L3 LED RED R7 1K VCC OC 1 CLK 11 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 1Q 19 2Q 18 3Q 17 4Q 16 5Q 15 6Q 14 7Q 13 8Q 12 IC30 74HC574 VCC R31 10R R32 4M7 VCC X1 32 768KHz R34 470K R8 1K C25 10nF R33 4M7 C26 22pF D0 5 D1 6 D2 7 D3 8 D4 9 D5 10 D6 12 D7 14 GND 15 CS 16 AS 17 DS 21 STBY 20 R W 19 RESET 22 MOT 2 SQW 27 PS 26 CLKOUT 25 CLKFS 24 OSC1 3 OSC2 4 IRQ 23 Vd...

Page 35: ...4 5 6 7 8 IC51 75176 VCC VCC VCC VCC R41 220R R42 220R R112 220R R113 220R VCC D2 BAV103 VCC R114 220R R115 220R R57 47R R60 10R R44 10K R45 10K C28 1uF C29 1uF B1 Bead B2 Bead B4 Bead B3 Bead VCC VCC PolySwitch FDD MIDI KEYBOARD DMX1 DMX2 In Thru Out D24 D25 D26 D27 D28 D29 D30 D31 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 D 0 31 A 0 31 RESET R W RSTDRV D24 D25 D26 D27 D28 D29 D30 D31 D24 D25 D26 D27 D28 D29...

Page 36: ...49 MA3 150 MA2 151 MA1 152 MA0 153 AVDD4 154 MFILTR 155 AVSS4 156 MCLK 157 XTAL 158 OSC 159 VSS13 160 VDD5 107 IC65 GD5429 C36 10pF R67 150R R68 150R R69 150R C37 10pF C38 10pF C17 100nF C24 10uF C33 1uF C18 100nF R75 10R R76 10R Video 1 GND 2 Vcc 4 OUT 3 IC66 14 31818MHz MD16 MD17 MD18 MD19 MD20 MD21 MD22 MD23 MD24 MD25 MD26 MD27 MD28 MD29 MD30 MD31 MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8 MA0 MA1 MA2...

Page 37: ...Circuit Diagrams and Overlays F 3 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4MAST3 Circuit diagrams ...

Page 38: ... IC4 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC7 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC14 74HC245 C4 10uF R14 100K VCC VCC VCC VCC R38 10K R39 10K R40 10K R41 10K R42 10K R44 100K R45 100K R46 100K R47 100K R48 100K R49 100K C41 10nF C43 10nF C45 10nF R43 10K OC...

Page 39: ...herry R63 100K S13A Cherry R64 100K S14A Cherry R65 100K S15A Cherry R86 100K S16A Cherry R87 100K S17A Cherry R88 100K S18A Cherry R89 100K S19A Cherry R90 100K S20A Cherry R91 100K S21A Cherry R92 100K S22A Cherry R93 100K S23A Cherry R94 100K S24A Cherry R95 100K S25A Cherry R96 100K S26A Cherry R97 100K S27A Cherry R98 100K S28A Cherry R99 100K S29A Cherry R100 100K S30A Cherry R101 100K S31A ...

Page 40: ...Circuit Diagrams and Overlays F 4 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4ASN3 Circuit diagrams ...

Page 41: ...0820 VCC VCC A 1 B 2 C 3 E1 4 E2 5 E3 6 Y0 15 Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 IC12 74HC138 OC 1 C 11 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 1Q 19 2Q 18 3Q 17 4Q 16 5Q 15 6Q 14 7Q 13 8Q 12 IC13 74HC573 VCC VCC C23 10uF R23 100k C24 10uF VCC S T 19 ML2261 LED0 LED1 SW3 SW2 100 300VAC TO BACKLIGHT 5 SELECT CARD DATA BUS CONTRAST GND ALEL R W DS D1 D7 D6 D5 D4 D3 D2 D0 ALEH 12 5 12 1 2 3 4 8 ...

Page 42: ...00nF VCC C13 100nF VCC C14 100nF C15 100nF FADER1 10K C16 100nF FADER2 10K C17 100nF FADER3 10K C18 100nF FADER4 10K C19 100nF FADER5 10K C20 100nF FADER6 10K C21 100nF FADER7 10K C22 100nF FADER8 10K F 1 8 FADTOP FADGND L 1 8 LL 1 8 R4 1K R5 1K S1A SERU S1B SERU1 R6 1K R7 1K S2A SERU S2B SERU1 R8 1K R9 1K S3A SERU S3B SERU1 R10 1K R11 1K S4A SERU S4B SERU1 R12 1K R13 1K S5A SERU S5B SERU1 R14 1K ...

Page 43: ...Circuit Diagrams and Overlays F 5 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4PRE3 Circuit diagrams ...

Page 44: ...R 1 IC10 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC11 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC12 74HC245 A 1 B 2 C 3 E1 4 E2 5 E3 6 Y0 15 Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 IC13 74HC138 VCC VCC OC 1 C 11 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 1Q 19 2Q 18 3Q ...

Page 45: ...2 3 2 1 4 11 IC17A TL074 R52 22k C50 10nF R64 4k7 S6B 3mm RED 12 13 14 IC17D TL074 R53 22k C51 10nF R65 4k7 S7B 3mm RED 10 9 8 IC17C TL074 R54 22k C52 10nF R66 4k7 S8B 3mm RED 5 6 7 IC17B TL074 R55 22k C53 10nF R67 4k7 S9B 3mm RED 12 12 3 2 1 4 11 IC18A TL074 R56 22k C54 10nF R68 4k7 S10B 3mm RED 12 13 14 IC18D TL074 R57 22k C55 10nF R69 4k7 S11B 3mm RED 10 9 8 IC18C TL074 R58 22k C56 10nF R70 4k7...

Page 46: ...Circuit Diagrams and Overlays F 6 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4PAL3 Circuit diagrams ...

Page 47: ... 5Q 15 6Q 14 7Q 13 8Q 12 IC13 74HC573 5 10 15 20 3 8 13 18 4 9 14 19 1 6 11 16 2 7 12 17 20 15 10 5 19 14 9 4 18 13 8 3 17 12 7 2 16 11 6 1 9D 9E 9F 9F 9E 9D GND 1 D0 2 D1 3 GND 4 D2 5 D3 6 GND 7 D4 8 D5 9 GND 10 D6 11 D7 12 VCC 13 RW 14 ALEH 15 VCC 16 DS 17 ALEL 18 12 19 12 20 CONN1 20WAY LATCH HEADER DD0 DD1 DD2 DD3 DD4 DD5 DD6 DD7 12 12 VCC S1A R1 100K S2A R2 100K S3A R3 100K S4A R4 100K S5A R5...

Page 48: ...Circuit Diagrams and Overlays F 7 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL BKLTSML2 Circuit diagrams ...

Page 49: ...2 9582 0909 1 0 9 Jul 1999 H LAB EVENT4 CIRCUIT Bkltsml2 sch Title Size Number Date File Revision Sheet of A4 Small Backlight driver bkltsml0 Drawn By R1 100R R2 100R C1 10uF 12 C2 10uF 12 R3 10k 12 R4 220R Q1 BCX17 Q2 BCX19 R5 10k 12 100 300VAC TO BACKLIGHT INV1 Seiko 5C T1p U1p Output 1 Output 2 ...

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