Fostex PH-100, Service Manual

Page 1: ...Service Manual Model PH 100 HEADPHONE AMP DISTRIBUTOR ...

Page 2: ...r against them paying particular attention to cords at plugs convenience recep tacles and the point where they exit from the appliance Cleaning The appliance should be cleaned only as rec ommended by the manufacturer Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time Object and Liquid Entry Care should be taken so that obje...

Page 3: ...ams are given in this manual to assist the service technician in maintaining the Model PH 100 The following accessories are supplied with PH 100 as the standard accessories PH 100 owner s manual MULTI 8288495000 Following is the packing material for the Model PH 100 Carton inner PH 100 8528031000 Packing side A PH 100 8528029000 Packing side B PH 100 8528030000 1 2 3 4 4 5 6 14 SPECIFICATIONS CONT...

Page 4: ...0 V 50 60 Hz UK BS AC 230 V 50 Hz POWER CONSUMPTION 18 W STANDARD ENVIRONMENT Standard Temperature 20 3 C Standard Humidity 60 5 ENVIRONMENT CONDITION Characteristics Guaranteed Temperature 5 35 C Humidity 30 65 AC Voltage Deviation 5 or less Operation Guaranteed Temperature 5 45 C Humidity 10 90 AC Voltage Deviation 5 or less PHONES MAXIMUM OUTPUT 500 mW at 32 Ω load 3 distortion 10 dBV 1 kHz inp...

Page 5: ... 6 5 4 3 2 1 PHONES CAL 1 2 3 4 5 6 7 PH 100 Front Panel 4dBu 5 4 3 2 1 10 9 8 7 6 PHONES PRIORITY TO FRONT PHONES OUTPUT AC IN CASCADE OUT 10dBV L 10 9 8 7 6 R L MONO INPUT 10dBV CHANNEL IN 10dBV INPUT L INPUT R 10dBV 10dBV HOT R L MONO AUX IN 10dBV COLD GND XLR PHONE 2 3 1 T R S 2 1 4 3 5 R 4dBu 2 1 3 4 5 6 7 8 PH 100 Rear Panel 1 AC IN connector 2 PHONES jacks 1 through 10 3 CASCADE OUT jacks L...

Page 6: ...76 8000 00 Cord power DM VM1292 1298 8 8526 0190 00 Knob push power PH 100 9 8526 0130 00 Knob volume VF16EX 10 8520 0330 00 Angle rack mount DE 10 11 8520 0370 00 Bracket AC IN NF 01A 12 8520 0440 00 Bracket volume PY008A0 13 8520 0450 00 Panel front print PH 100 14 8520 0460 00 Panel rear print PH 100 15 8520 0470 00 Chassis PH 100 16 8516 0370 00 Sheet insulation PH 100 17 N A 18 N A 19 8274 41...

Page 7: ...BZn B3 x 8BZn BBT3 x 6BZn BBT3 x 6BZn BBT3 x 8BZn BBT3 x 8BZn BBT3 x 6BZn BBT3 x 6CZn BBT3 x 6BZn 22 BBT3 x 8BZn BBT3 x 6CZn B4 x 6BZn BBT3 x 6BZn B4 x 8 BZn BBT3 x 6BZn BBT4 x 6BZn NUT HEX M4 ZMC3 Nut attached to VOL Washer attached to VOL BBT3 x 8BZn BBT3 x 8BZn 8 BBT3 x 6BZn 6 24 3 5 BBT3 x 8 BZn BBT3 x 6BZn ...

Page 8: ...96 R202 C127 C126 R201 IC21 C135 C138 R213 R214 R207 R206 FL4B R212 R208 C131 C132 C145 R226 R225 C144 R220 C140 R218 C141 R224 FL5A R219 FL5B R200 1 4 5 8 C201 C120 C121 J27 J26 R192 R179 C110 C200 C119 1 4 5 8 1 4 5 8 1 4 5 8 R186 IC18 R289 J28 C115 R180 R198 C111 R185 C116 J5 J4 IC20 R187 R290 C124 IC19 R181 R182 J29 R291 C118 C113 C114 R189 R197 R188 J1 R173 C106 C107 J3 J2 R288 R174 C112 R177...

Page 9: ...00 C195 R160 C99 R162 C197 C88 R15 R159 R11 C98 R161 VR12 R13 IC14 1 8 4 5 C69 IC3 R12 PKLED C10 C12 JP31 R10 JP91 C196 VR2 JP95 1 8 4 5 JP93 JP94 JP92 R23 IC15 C46 R24 D7 D6 R27 R8 R31 C48 R30 R29 1 8 4 5 JP28 JP29 JP90 JP30 C44 JP89 JP75 JP74 JP63 JP64 JP71 JP70 JP72 JP73 JP57 JP67 JP59 JP60 JP62 JP61 JP66 JP65 JP69 JP88 JP54 JP82 JP56 JP86 JP85 JP87 JP86 JP5 JP27 JP51 JP46 JP45 JP47 JP48 JP50 J...

Page 10: ...M1E01D110 25V 220M T C50 CERA S SL 50V 100J T C51 ELECT EGST226M1E01D110 25V 220M T C52 CERA S SL 50V 100J T C53 ELECT EGST226M1E01D110 25V 220M T REF PART No PART NAME C54 55 N A C56 57 ELECT EGST226M1E01D110 25V 220M T C58 59 PEST PEI308104 100V 104J T C60 61 ELECT EGST108M1E01G200 25V 102M C62 ELECT WP 25V 332M C63 ELECT EGST108M1E01G200 25V 102M C64 ELECT EGST225M1H01D110 50V 228M T C65 ELECT ...

Page 11: ...T S 50V 473K T REF PART No PART NAME C173 PEST PEI308102 100V 102J T C174 ELECT EGST476M1A01D110 10V 470M T C175 CERAS S YF 50V 104Z T C176 ELECT SC 10V 331M T C177 PEST S 50V 473K T C178 PEST PEI308102 100V 102J T C179 ELECT SC 10V 470M T C180 ELECT SC 10V 331M T C181 PEST S 50V 473K T C182 PEST PEI308102 100V 102J T C183 ELECT EGST476M1A01D110 10V 470M T C184 CERAS S YF 50V 104Z T C185 ELECT SC ...

Page 12: ...8 CARBON R CR 1 6W 332J T265 R99 100 CARBON R CR 1 6W 393J T265 REF PART No PART NAME R101 CARBON R CR 1 6W 104J T265 R102 CARBON R CR 1 6W 332J T265 R103 104 CARBON R CR 1 6W 393J T265 R105 CARBON R CR 1 6W 104J T265 R106 CARBON R CR 1 6W 332J T265 R107 108 CARBON R CR 1 6W 393J T265 R109 CARBON R CR 1 6W 104J T265 R110 CARBON R CR 1 6W 332J T265 R111 112 CARBON R CR 1 6W 393J T265 R113 CARBON R ...

Page 13: ... CR 1 6W 332J T265 R247 CARBON R CR 1 6W 103J T265 R248 METAL R MO 1W 568J M15 R249 CARBON R CR 1 6W 100J T265 R250 252 CARBON R CR 1 6W 332J T265 R253 CARBON R CR 1 6W 103J T265 R254 CARBON R CR 1 6W 100J T265 R255 METAL R MO 1W 568J M15 R256 258 CARBON R CR 1 6W 332J T265 R259 CARBON R CR 1 6W 103J T265 R260 METAL R MO 1W 568J M15 R261 CARBON R CR 1 6W 100J T265 R262 264 CARBON R CR 1 6W 332J T2...

Page 14: ...14 PH 100 Service Manual 4 CIRCUIT BLOCK DIAGRAMS MAIN 1 2 POWER 1 2 POWER SW POWER LED PCB PH 100 MAIN PCB POWER SW PCB POWER LED PCB POWER PCB ...

Page 15: ...15 PH 100 Service Manual HP VOL PCB PH 100 ...

Page 16: ...16 PH 100 Service Manual MAIN 2 2 PCB PH 100 ...

Page 17: ...17 PH 100 Service Manual PHONES OUT POWER 2 2 PCB PH 100 PHONES OUT PCB POWER SW PCB ...

Page 18: ... FRONT PHONES 7 FRONT PHONES 8 FRONT PHONES 9 FRONT PHONES 10 FRONT PHONES 1 REAR PHONES 2 REAR PHONES 3 REAR PHONES 4 REAR PHONES 5 REAR PHONES 6 REAR PHONES 7 REAR PHONES 8 REAR PHONES 9 REAR PHONES 10 REAR CASCADE OUT L R 10dBV PEAK LED CHANNEL IN 1 10dBV CHANNEL IN 2 CHANNEL IN 3 CHANNEL IN 4 CHANNEL IN 5 CHANNEL IN 6 CHANNEL IN 7 CHANNEL IN 8 CHANNEL IN 9 CHANNEL IN 10 L MONO R 10dBV UNBAL 10...

Page 19: ...19 PH 100 Service Manual NOTE ...

Page 20: ...FOSTEX CORPORATION 3 2 35 Musashino Akishima Tokyo Japan 196 0021 FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave Norwalk CA 90650 U S A PRINTED IN JAPAN FEB 2003 8288808000 ...