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SH-004101-01 1 K
5-29-91 7-12-91 L G 10-9-91 11-6-91 6-10-92 10-21-92 L G 5-11-94 7-20-94 SGM SGM SGM SGM SGM SGM
B C D E F G H J K
PROD RELEASE PER ECO 1107 GLF REVISED PER ECO 1127 RDS REVISED PER ECO 1262 REVISED PER ECO 1289 PHQ REVISED PER ECO 1508 SGM REVISED PER ECO 1602 WR REVISED PER ECO 2009 REVISED PER ECO 2371 MP (EFF. 7-28-94) REVISED PER ECO 2506 MP (EFF. 12-09-94)
/
RAB
SGM SGM
+23V 0N/OFF ENABLE
TO SHEET 2
TRANSFORMER THERMAL SENSOR
THERMAL BUS TO FAN SPEED CONTROL
SCHEMATIC, 2-CH POWER AMPLIFIER EX 1250
REV E, 11-6-91, FOR PC-004101-00 REV D DOC NO. SH-004101-01
AUDIO AND POWER GROUNDS
R 53 3.3-1W
HEAT SINK GROUND
A
SHEET 1, HOUSEKEEPING SUPPLY AND FAN SPEED CONTROL
J 51
5 4
XF PTC XF PTC C 52 47-10NP R 51 47K
J 52-1
FAN BLK
1
18 Vac RN 51 2.7K
+24 V +15 V -15 V -24 V
+24 V UNREG 1 +15 V REG 3 -15 V REG 4 -24 V UNREG 2
U 52 C 56 100 35 V C 55 100 35 V
7815
3 2
1
D 51 1N4004 C 53 2200 35V
BR 51
2
Q 52 2N2907
C 51 100-35V
24 V BRUSHLESS FAN FAN RED
18 Vac
J 52-4
D
D 53 1N4746, 18V D 52 1N4746, 18V
Q 53 2N4410 2.7K 2.7K R 52 180K
A B
C 57 .01
3
CT
C
C 54 2200 35V
2
Q 51 2SC3298B 2.7K
3 1
U 51
7915
-24 V
SCHEDULE OF TEST POINTS CH-1 CH 2
J 502-1
ETC
J 502-1 J 602-1 NEGATIVE LIMITING VOLTAGE J 502-2 J 602-2 POSITIVE LIMITING VOLTAGE J 502-3 J 602-3 SWITCHING THRESHOLD REFERENCE VOLTAGE J 502-4 J 602-4 AMPLIFIER LOOP OPAMP OUTPUT J 502-6 J 602-6 SWITCHED POS AMPLIFIER RAIL--HIGH VOLTAGE J 502-8 J 602-8 SWITCHED NEG AMPLIFIER RAIL--HIGH VOLTAGE PART NUMBERING SCHEDULE FOR PCBS USED IN EX-1250: PCB NUMBER PC-004001-00 PC-004002-00 PC-004101-00 PC-004104-00 PC-004103-00 DESCRIPTION INPUT PCB AMP PCB SPKR PCB AC PCB CH 1 PARTS CH 2 PARTS PARTS IN COMMON 101-199 301-399 501-599 701-799 201-299 401-499 601-699 801-899 1-29 31-49 51-69 71-99 DISPLAY PCB NOTES. 1. ALL RESISTORS 1/4-WATT, 5% UNLESS NOTED. 2. ALL CAPACITORS 100V UNLESS NOTED. TOLERANCE 20% FOR ELECTROLYTIC TYPES, 10% ON OTHER TYPES. 3. BRIDGE RECTIFIER BR 51, 1.5A, 100V. 4. R 598, 698 IS POSITIVE TEMPERATURE COEFFICIENT RESISTOR MOUNTED TO HEAT SINK. RESISTANCE 100 OHM COLD, RISING AT 55 C. QSC P/N RE-000006-PT 5. Q 503, 504, 603, 604 ARE SWITCHING FETS. QSC P/N QD-000013-00 OR QD-000031-QD. 125 W, 50 V MINIMUM, ON-RESISTANCE 0.030 OHMS MAX. 6. ZENERS D 503, 504, 603, 604 MARKED 7.5 V TESTED FOR LOW LEAKAGE, QSC P/N QD-0007.5-ZT. 7. ZENERS D 509, 513, 609, 613, 6.2V-500mW, TESTED FOR LOW LEAKAGE, QSC P/N QD-000024-QD. 8. PARTS MARKED WITH TRIANGLE MUST BE REPLACED WITH EXACT TYPE ONLY. HAVE VOLTAGES GREATER THAN 42V. 9. PARTS ENCLOSED WITHIN DOTTED OUTLINE
+23V 0N/OFF ENABLE
901-UP (SAME BOARD FOR CH 1, CH2)
TO SHEET 3
TRANSFORMER THERMAL SENSOR
THERMAL BUS TO FAN SPEED CONTROL
LAST USED REF. DESIGN. BR 51, BR 502, 602 C51 - 57, C526, 626 D51 - 53, D513, 613 F504, 604 J51, 52, J503, 603 K501, 601 L501, 601 Q51 - 53, Q510, 610 R51 - 53, R544, 644, R598, 698, R599, 699 RN51, RN502, 602 U51, 52, U506, 606 VR503, 603
AUDIO PRODUCTS
SCHEMATIC EX-1250
PHQ 5-15-91
DRAWING SH-004101-01 K
1 3
WP-004101-10
NEXT ASSY
EX1250
USED ON
APPLICATION
SH1250J1.FCD
SH1250K1.FCD
SH-004101-01 2 K
SCHEMATIC, EX-1250, SHEET 2, AMPLIFIER CHANNEL A
TO -24 V
C 516 10-25V
R 531 470-1W
D 512 1N4004
MUTING INPUT CAP.
C 514 47-50V C 515 47-50V
T1 T2 T3
RELAY TIMING CAP.
ON-OFF MUTING DELAY SHUTDOWN MUTING RELAY MUTING BUS MUTE +8V RUN 0V
U 503 IC-000010-00
GROUND
MUTE -24V RUN +15V
14-PIN RIBBON J 503
T4 T5
TO +15V
DRIVER
MUTE BUS
MUTE
10
U 501
THERM ADJUST, 0.5-8.5V
HIGH RAIL
+92 V RAIL
R 543 330K
T6 R 532, 47K
THERMAL SENSE, 0-8V
IC-000008-00 THERMAL SENSING 50C +O.5V 90C +8V
LOSS-OF-SAT GATE DRIVER SHUTDOWN SCHMIDTT COMPARATOR GATE
T9 R 511 T8 22 FP
G D S
BR 502 Q 504 C 509 15000-50V F 502 10A-250V
J 501 6-PIN MATE-LOK
3
T7
THERMAL BUS, 0-8V
PROCESSING BUFFER
THERMAL
8
T8 C 517 220-10NP R 544 27K
OP-AMP OUT - HF PROTECT
SHUTDOWN DETECTORS THERMAL HIGH FREQ DC RECTIFIER
SOURCE REF
R 512 2.7-2W T7
C 503 .10
TO -92 V RAIL
F 504 10A-250V
4
T9
DC PROTECT SENSE
T10 R 527 10K-2W T11
OP-AMP OUT THERMAL LIMITING
TO MUTING T1 CLIP RECTIFIER-BUFFER
REF VOLT
LOW RAIL
SHUTDOWN
SLEW
NEG SUPP
BOOTSTRAP CAP
T2
T3
T4
T5
T6 C 502 47-50V
D 502 MUR 810
BR 501 F 501 10A-250V
6
LIMITING THRESHOLD +4.5V 0-3Vac NORMAL AUDIO 4.5-6.5Vac CLIPPING PEAKS
T12
OPTOCELL
IDLE -1.2V CLIP +3V PEAKS MUTE +4.5V
R 513 22K-1W D 504 7.5V
+46 V RAIL TO -46 V RAIL
F 503 10A-250V
1 TRANSFORMER CENTER TAP 2 5
T13
CLIP BUS
CLIP
11 TO +15 V
T14
+15 V SPEAKER BUS
C 511
+46 +92 V SWITCHED BUS
J 502-1 C 518 470-10V
TO -15 V
T15
-15 V
J 502-3
J 502-6 R 519 22-1W U 505-A 5532
1 3 2
15000-50V
R 520
R 521
T16
NEGATIVE BYPASS, -7.5V NORMAL, -2.5V SHORT
T17
NEGATIVE CURRENT FEEDBACK, -3V PEAK
R 599 NEGATIVE BIAS CONTROLLER
NEGATIVE TRIMMER
VR 501 100 BIAS U 505-B
5 6 4
R 522 .22-3W 3 PL D 508 1N5402 L 501 2uH
NC TO -24 V HEATSINK GROUND
K 501
NO
R 529 10K-2W VR 502 5K + CURR LIM VR 503 5K - CURR LIM
T18 T19
OUTPUT VOLTAGE FEEDBACK
50 OHM 25 C
C 519 680p
+15 V 8 7
Q 508 R 508 332 R 503 750K R 506 1.5K Q 502 2SC3298B R 504 4.7-1W
Q 509
Q 510
R 535 15K
SWITCHING THRESHOLD REFERENCE C
2SA1302 3 PL
AUDIO OUTPUT STAGE
T20
POS CURRENT TRIMMER
LOAD IMPEDANCE SENSING
BIAS ENABLE
C 504 .01 D 505 1N4004
J 52-5 R 525 5.6-2W R 524 3.9-2W
SPEAKER
-15 V
T21
POSITIVE CURRENT FEEDBACK +3V PEAK
POSITIVE BIAS CONTROLLER
BIAS NETWORK
A
R 534 2.7K
C 523 .0022
D B
R 501 750K R 507 332
R 505 1.5K
R 502 4.7-1W Q 501 2SA1306B Q 505 Q 506 2SC3281 3 PL Q 507 D 507 IN5402
R 523 5.6-2W C 506 .10
OUTPUT
T22
POSITIVE BYPASS, +7.5V NORMAL, +2.5V SHORT
C 512 .0033 D 506 1N4004
RN 502 1K-4 A
C 507 .10
SPEAKER COMMON
T23 C 513 470-10V J 502-2 GND GND GND
6 5 12 NEGATIVE DRIVER, -0.6V IDLE
J 52-6
T24
POSITIVE DRIVER, +0.6V IDLE
R 526 R 518 22-1W J 502-8
-46 V RAIL
R 516
R 515
T25
R 517 .22-3W 3 PL
C 510 15000-50V
3K-2W
-46 -92 V SWITCHED BUS TO RECT BR 501
A
D 503 7.5V
R 514 3K-2W
D 501 MUR 810 R 509 2.7-2W C 501 .10
R 542 47K-1W
TO -15V
R 528 7.5K-2W SPKR SIG
13
SPEAKER BUS
R 530 590 A
C 522 C 524 47-10NP
18pF-5%
T1
REF VOLT
T2
LOW RAIL
T3
SHUTDOWN
T4
GATE PWR SLEW
R 540 21.5K-.5W
GATE SCHMIDTT
T5 R 510 T6
LOSS-OF-SAT GATE DRIVER SHUTDOWN SOURCE REF
22 FP
G
D S
Q 503
A R 536 1.5 K
HEAVY LINE SHOWS MAIN SIGNAL PATH
R 537 590
A
R 538 75K
COMPARATOR
RN 501 10K-4
B
C 521 .12 C 520 .0022
C 508 C 505 470-10V T7
-92 V RAIL
15000-50V
TO RECT BR 502
U 502 IC-000009-00 R 598 PTC-60C
+INPUT
14 +15 V
A U 504 VTL 5C4
3 2
R 539 47
1
U 506-B 5532
8 5 6 7 4 -15 V
U 506-A R 541 590
AUDIO INPUT STAGE
THERMALLY
A GND REF
C 526 27 p
C
9 D
D 513 1N4735 6.2 V D 509 1N 4148
D 510 1N 4148
J 502-4
CONNECTED TO Q 508
R 533 47K-1W PWR-ON
7 TO +46 V RAIL
D 511 1N4735 6.2 V
C 525 68 p
+23V 0N/OFF ENABLE
TO SHEET 1
TRANSFORMER THERMAL SENSOR
THERMAL BUS TO FAN SPEED CONTROL
SH-004101-01
SH1250K2.FCD
K
2 OF 3
SH-004101-01 3 K
SCHEMATIC, EX 1250, SHEET 3, AMPLIFIER CHANNEL B
TO -24 V +23V 0N/OFF ENABLE
TO SHEET 1
TRANSFORMER THERMAL SENSOR
THERMAL BUS TO FAN SPEED CONTROL
J 603 +24 V +15 V -15 V -24 V
1 3 4 2
14-PIN RIBBON
N.C. N.C. N.C. N.C.
D 612 1N4004 R 631 470-1W
R 698 PTC-60C
THERMALLY CONNECTED TO Q 607
C 616 10-25V
MUTING INPUT CAP.
C 614 47-50V C 615 47-50V
T1 T2 T3
RELAY TIMING CAP.
ON-OFF MUTING DELAY SHUTDOWN MUTING RELAY MUTING BUS MUTE +8V RUN 0V
U 603 IC-000010-00
U 601 IC-000008-00
SCHMIDTT COMPARATOR
HIGH RAIL
+92 V RAIL
T9
GATE
BR 602 R 611 22 FP
G D S
J 601 6-PIN MATE-LOK
3
Q 604 C 609 15000-50V
F 602 10A-250V
GROUND
MUTE -24V RUN +15V
T8
LOSS-OF-SAT GATE DRIVER SHUTDOWN SOURCE REF
T4 MUTE
10 TO +15V
DRIVER
R 612 2.7-2W T7
C 603 .10
TO -92 V RAIL
F 604 10A-250V
4
MUTE BUS
T5
REF VOLT THERM ADJUST, 0.5-8.5V LOW RAIL SHUTDOWN SLEW NEG SUPP BOOTSTRAP CAP
T6 R 643 330K R 632, 47K
THERMAL SENSE, 0-8V
T1 THERMAL SENSING 50C +O.5V 90C +8V PROCESSING BUFFER
T2
T3
T4
T5
T6 C 602 47-50V R 613 22K-1W
D 602 MUR 810
BR 601 F 601 10A-250V
6
T7
THERMAL BUS, 0-8V
THERMAL
8
T8 C 617 220-10NP R 644 27K
OP-AMP OUT - HF PROTECT
SHUTDOWN DETECTORS THERMAL HIGH FREQ DC RECTIFIER
D 604 7.5V
+46 V RAIL TO -46 V RAIL
F 603 10A-250V
1 TRANSFORMER CENTER TAP 2 5
T9
DC PROTECT SENSE
T10 R 627 10K-2W T11
OP-AMP OUT THERMAL LIMITING
TO MUTING
SPEAKER BUS +46 +92 V SWITCHED BUS
C 611 J 602-6 R 619 22-1W R 620 R 621 R 622 .22-3W 3 PL D 608 1N5402 L 601 2uH
NC TO -24 V HEATSINK GROUND
J 602-3 CLIP RECTIFIER-BUFFER LIMITING THRESHOLD +4.5V 0-3Vac NORMAL AUDIO 4.5-6.5Vac CLIPPING PEAKS IDLE -1.2V CLIP +3V PEAKS MUTE +4.5V VR 601 100 BIAS U 605-B
5
15000-50V
T12
OPTOCELL
T13
CLIP BUS
R 699 50 OHM 25 C
C 619 680p
+15 V 8 7
U 605-A 5532
1
K 601
NO
3 2
Q 608 R 608 332 R 603 750K R 606 1.5K Q 602 2SC3298B R 604 4.7-1W
Q 609
Q 610
CLIP
11 TO +15 V
T14
+15 V
R 635 15K
SWITCHING THRESHOLD
2SA1302 3 PL
AUDIO OUTPUT STAGE
J 602-1 C 618 470-10V
TO -15 V
T15
-15 V
C 604 .01 D 605 1N4004
BIAS NETWORK NEGATIVE CURRENT FEEDBACK, -3V PEAK
6 4 -15 V
REFERENCE C
J 52-2 R 625 5.6-2W R 624 3.9-2W
SPEAKER OUTPUT
T16
NEGATIVE BYPASS, -7.5V NORMAL, -2.5V SHORT
T17 NEGATIVE BIAS CONTROLLER
NEGATIVE TRIMMER
A
R 634 2.7K
C 623 .0022
D B
R 601 750K R 607 332
R 605 1.5K
R 602 4.7-1W Q 601 2SA1306B Q 605 Q 606 2SC3281 3 PL Q 607 D 607 IN5402
R 629 10K-2W VR 602 5K + CURR LIM VR 603 5K - CURR LIM
T18 T19
OUTPUT VOLTAGE FEEDBACK
C 612 .0033 D 606 1N4004
RN 602 1K-4 A
C 607 .10
R 623 5.6-2W C 606 .10
SPEAKER COMMON
J 52-3
T20
POS CURRENT TRIMMER
LOAD IMPEDANCE SENSING
R 626 BIAS ENABLE R 618 22-1W J 602-8 R 616 R 615 R 617 .22-3W 3 PL C 610 15000-50V
TO RECT BR 601
3K-2W
T21
POSITIVE CURRENT FEEDBACK +3V PEAK
-46 -92 V SWITCHED BUS
POSITIVE BIAS CONTROLLER D 603 7.5V
-46 V RAIL
T22
POSITIVE BYPASS, +7.5V NORMAL, +2.5V SHORT
T23 C 613 470-10V J 602-2 GND GND GND
6 REF VOLT 5 12 LOW RAIL SHUTDOWN SLEW NEGATIVE DRIVER, -0.6V IDLE
R 614 3K-2W
D 601 MUR 810 R 609 2.7-2W C 601 .10
R 642 47K-1W
TO -15V
T24
POSITIVE DRIVER, +0.6V IDLE
T25
T1
T2
T3
T4
GATE PWR
T5 A
SCHMIDTT LOSS-OF-SAT GATE DRIVER SHUTDOWN SPEAKER BUS SOURCE REF COMPARATOR GATE
R 610 T6
22 FP
G
D S
Q 603
R 628 7.5K-2W SPKR SIG
13
C 608 C 605 470-10V T7
-92 V RAIL
15000-50V
TO RECT BR 602
C 622 R 630 590 A C 624 47-10NP
18pF-5%
U 602 IC-000009-00
R 640 21.5K-.5W
A R 636 1.5 K
HEAVY LINE SHOWS MAIN SIGNAL PATH
R 637 590
A
R 638 75K
RN 601 10K-4
B
C 621 .12 C 620 .0022
+INPUT
14 +15 V
A
U 604 VTL 5C4
3 2
R 639 47
1
U 606-B 5532
8 5 6 7 4 -15 V
U 606-A R 641 590
AUDIO INPUT STAGE
A
D 610 1N 4148 C 626 27 p D 613 1N4735 6.2 V D 609 1N 4148
J 602-4
GND REF
9 D C
R 633 47K-1W PWR-ON
7 TO +46 V RAIL
D 611 1N4735 6.2 V
C 625 68 p
SH-004101-01
SH1250K3.FCD 3
K
OF 3
SCHEMATIC, EX-SERIES DISPLAY BOARD.
PC-004001-00, REV A. J 1 26-PINS
AC RELAY 1 AC RELAY 2 +24V -24V REG. +15V 25 26 10 9 12
A PROD REL PER ECO 756 B REVISED PER ECO 1603 WR
6-19-90 9-29-92
J101, 201 14-PINS
2 1 4 +24V UNREG -24V UNREG +15V REG
C101 RN101 10K D(C)
- INPUT 1
100p 10K C(D)
8
U101 A 5532 U101 B 5532 VR101
7 4 3
C107 4.7uf NP
C2 10uf
+
R110 4.7K 10K GAIN
2
13 1 10
TO AMP +INPUT TO AMP -INPUT
R102 1K 10K B
6 5
+ INPUT
2
10K A
SIG. GND SIG. GND 3
R103 1K
R104 536
C102
5
100p A
C1 + 10uf
11 SIG. GND
REG. -15V THERM BUS, 0-8V
11 23
3 7
-15V REG THERM BUS 0-8V
Q103 2N4410 R112 1.5K
PWR-ON, 0-15V SPKR SIGNAL, 5V PK CLIP-LIM BUS, 0-4V MUTE BUS, 0-8V 19 15 21 17 8 Vcc SENSE R
+ C108 10uF
R111 1.5K
14 12 9 SPKR SIGNAL, 5V PK CLIP-LIM BUS, 0-4V MUTE BUS, 0-8V
R105 LEVEL LD104 YEL -30 BA6124 RN103 1K-D LD105 GRN PWR ON 100 LD103 YEL -10
R109 3.9K 1K-D LD102 R113 634 RED LIM-CLIP 1K-B 1K-A C 109 10uF Q102 2N 4410 10K-A(D) D101 1N4004 C104 470 10V RN102 + 10K-D(A) 10K-C(B) 10K-B(C) Q101 MPS2907
RN103 1K-C 1K-B
SH-004001-00 1 B
C106 10uF
U102
R107 330K R108
1K-A R101 100
R106 10K C105 10uF
536 RN 104 1K-C
Q 104 2N 4410 C103 .0033
LD101 RED TEMP-PROT
5 6
PWR GND PWR GND
PWR GND
13
NOTES CH 2 PINS
- INPUT + INPUT SIG. GND SIG. GND THERM BUS, 0-8V PWR-ON, 0-15V SPKR SIGNAL, 5V PK CLIP-LIM BUS, 0-4V MUTE BUS, 0-8V PWR GND 4 6 7 8 24 19 16 22 18 14
1. ALL RESISTORS 1/4 WATT UNLESS SPECIFIED. 2. ALL CAPACITORS 25V UNLESS SPECIFIED. 3. CH 2 RESISTOR NETWORK SECTIONS ( ) WHEN DIFFERENT. 4. CH 1 COMPONENTS NUMBERED 101-199 5. CH 2 COMPONENTS NUMBERED 201-299. 6. PARTS IN COMMON TO BOTH CHANNELS NUMBERED 1-99. 7. U102, 202 ROHM BA6124 OR SAMSUNG KA2284/85 8. LD 101, 102, HIGH-EFFICIENCY RED LED. 9. LD 103, 104, HIGH-EFFICIENCY YELLOW LED. 10. LD 105, HIGH-EFFICIENCY GREEN LED. PAT QUILTER 6-19-90
SCHEMATIC DIAGRAM EX-SERIES DISPLAY BOARD SH-004001-00 B
FCAD: 004001SH
SH4001B1.FDC
1 OF 1
4
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS , THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS.
3
2
1
REVISIONS
ZONE REV DESCRIPTION DATE APPROVED
A B
PROD REL PER ECO 756 CHANGE VALUE R31, WAS 21 K
SEE ECO 1097 6-10-91 SGM
C
REVISED FOR MIN-SLOT, BR-SW
SEE ECO 1297 BY PHQ L G.
1-24-92
SGM
D
D
REVISE PER ECO 1916
D
SCHEMATIC, EX-SERIES STANDARD INPUT BOARD.
FOR PC-004005-00 REV B 7-15-93 W 301 C 302 470 p J 301 XLR
2 3 1
PADS FOR LEVEL 1-A OR 2-A ACCESSORY PCB
PIN 1 V+A
J 32
11
+15 V REG CH 1 SPKR SIG GND GND +INPUT CH 1
PIN 2 SP-A 16 PIN 3 GND 4 PIN 4 +1N A 6
C 301 470 p T 301
1 (1) 4 (5) 6 (8)
R 301
(6, 7)
W 304 W 303
A
A C 303
W 305
PIN 5 +OUT A PIN 6 -IN A
1
3 (4)
A J 31 CH 1 +IN
SHIPPED XLR PIN 2 HI MOVE W 303, 304 TO ALT POSITION FOR PIN 3 HI
W 306 W 302 NC R 31 20.0 K R 32 24K C 31 220p
PIN 7 -OUT A PIN 8 GND PIN 9 CLIP
2
-INPUT CH 1
J 33 CH 1 -IN
22 PIN 10 V-A 12 KEY PIN 11 V- B PIN 12 CLIP B 10 9
CH 1 CLIP-LIM -15 V REG -24 V +24 V CH 2 CLIP-LIM GND GND -INPUT CH 2
C
GND CH 2 -IN CH 2 +IN
A
INPUTS PARALLEL CENTER STEREO
MONO-BRIDGE
A
C
SW 31 3-POS
W 401 NC
PIN 13 GND
21 8 7 PIN 14 -0UT B 3 PIN 15 -IN B
J 401 XLR
2 3 1
W 403 W 404 C 402 A
SHIPPED XLR PIN 2 HI MOVE W 303, 304 TO ALT POSITION FOR PIN 3 HI
T 401
3 (4) 1 (1) 6 (8) 4 (5)
R 401
(6, 7)
W 406
A W 405 C 403
PIN 16 +OUT B 5
+INPUT CH 2 GND GND CH 2 SPKR SIG
C 401 470 p W 402
PIN 17 +IN B 14 PIN 18 GND
470 p
A
PIN 19 SP-B PIN 20 V+B PIN 21 SPARE PIN 22 SPARE
13
15
18
CH 1 MUTE CH 2 MUTE CH 1 PWR-ON CH 2 PWR-ON CH 1 THERMAL CH 2 THERMAL CH 1 AC RELAY CH 2 AC RELAY
B
17 20 19 24 23 26 25
B
NOTES, ALL REV LEVELS
1. ALL RESISTORS 1/4W, 5%. 2. ALL CAPACITORS 100V 3. J 32, 26-PIN CONNECTOR, TO J 1 ON FRONT DISPLAY BOARD PC-004001-00. 4. PARTS FOR CH 1 NUMBERED 301-399. 5. PARTS FOR CH 2 NUMBERED 401-499. 6. PARTS IN COMMON TO BOTH CHANNELS NUMBERED 31-49. 7. BOARD SHIPPED WITH W 301-304, W 401-404 MOUNTED AS SHOWN. 8. PARTS WITHIN DOTTED OUTLINE FOR USER MODIFICATION. SEE MANUAL.
UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. DIMENSIONS PER ANSI Y14.5-1982 CONTRACT NO.
PARTS LIST
A
AUDIO PRODUCTS, INC.
COSTA MESA, CALIFORNIA
DATE
NOTES, REV LEVELS A-B
1. THE FIRST YEAR OF PRODUCTION EX AMPLIFIERS SHIPPED WITH PC-004002-00 REV A OR B 2. FOR PC-004005-00 REV A, ADDED PADS 1-20 FOR LEVEL 1-A, 2-A INPUT ACCESSORY PCB 3. ADDED J33, 5-PIN INPUT EXTENDER HEADER AND W305,306,405 & 406. 4. NO CHANGE IN PINOUT OF J32, PINS 1-26 5. SW-31 WAS REVISED ON PC-004005-00 REV A, BUT WILL NOT AFFECT FUNCTION OF UPPER SLOT PCB.
TOLERANCES ARE: DECIMALS DECIMALS ANGLES O APPROVALS
A
.XX
+ -
.XXX
+ -
+ DRAWN
DEBURR EDGES .XXX R MAX MATERIAL CHECKED
PAT QUILTER
6-18-90
SCHEMATIC DIAGRAM EX SERIES STANDARD, INPUT BOARD
SIZE FSCM NO. DWG NO. REV
PC-004005-00
EX/MPA SERIES
USED ON
FINISH
ISSUED
NOTES: UNLESS OTHERWISE SPECIFIED
NEXT ASSY
CAD SEED FILE NO.
C
SCALE
SH-004002-00
NONE
CAD FILE NO.
D
1 OF 1
APPLICATION
DO NOT SCALE DRAWING
SH40002C1.FCD
SH4002D1.FCD
SHEET
4
3
2
1