Fisher CA 869 Service Manual

Page 1

SERVICE MANUAL

FISHER

STEREO AMPLIFIER (SA-869
(EUROPE)
1 32 299 42
SPECIFICATIONS
POWER AMPLIFIER SECTION Graphic Equalizer
Minimum RMS sine wave power per channel 63Hz :10 dB
within stated bandwidth at no more than stated 250Hz :10 dB
distortion and with 8-ohm load 100 Watts 1 KHz 1'10 dB
Power Bandwidth 20 Hz - 20 kHz 4KHz :10 dB
Total Harmonic Distortion 0.09 % 16KHz $10 dB
i.M. Distortion I 0.09 lo Loudness Contour (1 00 Hz/10 kHz) +8 dB/+4 dB
Speaker Damping > 20 Hum & Noise (IHF Short Circuit, A Network)
PREAMPLIFIER SECTION Phono , 65 dB
Frequency Response Tape MonItor 85 dB
Phono (RIAA) :1 dB Tuner/Video/CD 85 dB
Aux (20 Hz - 20 kHz) :1 dB GENERAL
Input Sensitivity and Impedance Power Requirements (50 Hz) 1 10/220 VAC
Phono 2.5 mV/5O kn Power Consumption 510 Watts
Tape Monitor 150 mV/5O k9 Dimensions (W x H x D) 440 x 108 x 315 mm
Tuner/Video/CD 150 mV/50 k0 Weight (approx) 8.0 kg
Phono Max. Input Capability 150 mV

-- Specifications and design are subject to change without notice.-

REFERENCE No. WM-1 9670

Page 3

CABINET & CHASSIS EXPLODED VIEW

POWER AMPLIFIER ADJUSTMENT

BEFORE ADJUSTMENT
Unplug the AC power cord and set the front panel controls as follows:

Power switch to OFF position.
Set the SPEAKERS switch to the OFF position.
Set the volume level to minimum level by Pressing the VOLUME DOWN button.

IDLING CURRENT ADJUSTMENT VR501/VR502 (on the Main Amplifier P.C.Board) setting to mechanical center
post Ion.

Connect the AC power cord and Power Switch to the ON position.

IDLING CURRENT ADJUSTMENT
This adjustment is very sensitive to changes in ambient temperature. Allow set to operate for 2 minutes
before attempting this alignment.

LEI-'I AMPLIFIER RIGHT AMPLIFIER

1) Connect the DC Voltmeter between Pins 19 and 21 on 1) Connect the DC Voltmeter between Pins 20 and 22 on
the Main Amplifier P.C.Board. the Main Amplifier P.C.Board.

2) Adjust the VR501 for an indication of 9mV (7mV 2) Adjust the VR502 for an indication of 9mV (7mV
~15mV) on the DC Voltmeter. ~15mV) on the DC Voltmeter.

Page 4

CABINET & CHASSIS PARTS LIST

PRODUCT SAFETY NOTICE

Each precaution in this manual should he followed during servicing. Components identified with the IEC symbolAin the
parts list and the schematic diagram designate components in which safety can be of special significance. When replac-
ing a component identified withA, use only the replacement parts designated, or parts with the same ratings 01 resisA
lance. wattage or voltage that are designated in the parts list in this manual.
Leakagevcurrent or reslstance measurements must he mede to determine that exposed parts are acceptably insulated
from the supply circuit before returning the product to the customer.

as" Part No. Description O'ty :3? Part No. Description O'ty
PACKAGE 25 141 21259-11200 801mm Cover 1
3-9415-10300 Baa Polyethylene 1 26 141 22149-31200 Parel Front 1
131 45-30011-1350110 Pad 1 27 141 20119-31600 Chassis 1
131-6600966420 Pad 1 28 141 24129-06600 Sub Chassis 1
1 31-6-3069-16350 Patching Sheet 1 29 141 72-3159-05800 Metal Heinluroe 1
131-6-4559-11200 Serial No. Sheet 2 30 141-2-4359-41200 Plate Sever 3
141 51189-20501 Box Cnrruuateexp 1 31 131-2-7104-00500 Plate Pad Switch 1
141 64469-11701) Pad (Front) 1
141 -6-1459-11 1500 Pad (Rear) 1 41 14170193940570 Graphic E0. P OB. Assy 1
141 -6-2519-22290 Sheet Polyethylene 1 42 1410493940581 Phone ED. ROB. 055V 1
131 -6-3009-36700 Pad 2 43 141-0-1939-20501 Pin Jack P08. Assy 1
44 141 -0-1 939-20600 Function P 0. B.Assy 1
45 141 41493920610 LED Ind. P.C.B Assy 1
ACCESSORIES 46 141-0493920620 Spectrum Analyzer P03. 45511 1
131 -6-2719-1 0401 Bag Fan 1 47 141-0-1939-20631 Main Amp RUB. Assy 1
142 -6-41 19-3341 9 Explanatory Booklet 1 46 141-0-1939-20641 Power SW1 PCB. Assy 1
49 141-0-1939-20651 Svea ker Terminal 17.0.0. Assy 1
50 141 0-1 939-20580 Bias P.C.B. Assy 2
CABINET 51 141-0-1939-23290 Lamp P.C.B. Asey 1
4437041520 Terminal Lug 1 52 A 4-2312-01020 SW Slide (AC Selector) (5001] 1
131 -G-4559-11200 Serial No. Sheet 1 53 A 4-2432-00400 Power Cord 1
14172472904200 Luu 1 54 A 4-2512-25021 Power Trans 1
14172-4729-07100 Wire Band 9 55 4812940724 Lamp 2
1 131 -2»1 41 11-35400 Cover 1 53 405 033 3309 TH 280328041 [0515, 05161 1
2 131 -2-1601 £9601 Knob (Speaker Selector) 2 or 405 033 7208 TR 2801717-0 [(151 5 05161 1
3 131 -2-1 001 33303 Knob (Power) 1 57 405 031 2106 YR 25111301 -R (0517, 0510] 1
4 131-2-1601-93400 Knob (Balance) 1 or 405 031 8801 TH 2831 162-0 [0517, 0513] 1
5 131-2-3202-13400 Metal Reinforce 2 58 405 031 2205 TH 28A1302-R (0545] 1
6 131 24608-16409 Filter 1 59 405 017 790'! TR 2803201 -R [05461 1
7 131-2520553300 Cushion 1
B - 141-0-1129-25008 Cabinet Front Assy 1 64 411 0391102 SCH PAN 2X4 9
- 141-2-1129-52001 Cabinet From 1 65 411 002 0503 SCH PAN 3X6 2
- 141-2431952300 Window 1 66 411 003 8900 SCH PAN-i-SW 3X6 2
- 141-2444901297 Plate Front 1 67 41 1 020 7700 SCH S-YPG 5111 3X6 23
- 141 -2-1 449-65012 Plate Decorate 1 68 411 099 9704 SCH S~TPG 8112 Site 12
- 141-2-2449-50400 Shelter Stine Volume 1 59 411 090 9303 SCH S-TPG BRZ 3X0 10
7 131-2611363300 Shelter 1 70 411 020 5904 $011 S-TPG 8R2 (1)110 16
9 - 141-0-3519-26800 Mount PCB. Assy 1 71 411 020 5706 SCH SATPG BRZ 2.0}(8 1
- 141-2-3519-34600 Mount P.C.B. 1 72 141-2-4219-38400 +BTS-B 4X8 Sems BLK 4
- 141-2-1449-651 10 Screen LCD 1 73 131-2-4201-25201 +BRTS-B Sems 3X0 2 7
- 1412-3229-6251» Plate Shield 1 74 141-2421943300 +8TS-C M4X10 Sems 4
- 42359-79034 Connectnr1P Assy 1 75 411 020 (1004 SCR STPG Bill 3101 3
10 141-2-1659-35900 Knob (Equalizer) 5 76 411 002 9104 SCH PAN 3X0 2
11 141-2-1 659-63401) Knob (Function) 5
1 2 1 41 -2v1 559-63500 Knob (Loudness) 1
13 1417271 659433601 Knob (Volume) 1 NOTES:
14 14172731597033th Bracket Cover 1 1. Parts order must contain Model Number, Part Number and
15 141-2-4469-55500 Cushion 1 Description.
113 131-2-4221-00600 Rivet 2 2. Ordering quantity of screws and resistors must be multipte of
17 131-2-1410-34036 Cover Heat Sink 1 10 pcs.
10 131-2-1801-14100 Leg 4
19 131 24201-17000 Screw Ground 1
20 131 25205-15000 Cushion 1
21 131 .2-52175-35900 Cushion 1
22 131-2611144200 Bushing (4N4) 1
23 181-2-6201-38500 Heat Sink 1
24 141-24219409117 Panel Rnr 1

Page 8

P.C.BOARD PARTS LISTlComInued)

NB? Part No. Description O'Iy :31 Pm No. Dncripflon O'Iy
0554 404 012 7000 CERAMIC 0.01 U P 500V 1 R560 401 0231706 CARBON 520 JA1/4W 1
c555 404 012 7000 CERAMIC 0.01 U P 500V 1 R561 401 016 3509 CARBON 2.2K JA1I4W 1
C556 404 012 7000 CERAMIC 0.01 U P 500V 1 R552 401 015 31109 CARBON 2.2K JA114W 1
C559 4-2239-72180 Elect 6800MF 72V 1 R553 402 01 B 5305 FUSIBLE RES 390 J- 112W 1
C560 4-2239-72100 Elect BBODMF 72V 1 R554 401 025 3703 CARBON 220K JA 116W 1
c563 42239-72120 Ceram 220PF 500v K 1 R565 401 010 4903 CARBON 33K JA1/4W 1
C564 4-2239-72120 Ceram ZZOPF 500V K 1 R567 401 062 2405 OXIDE-MT 4.7K J8 1w 1
0555 403 075 8504 CERAMIC 120? K 500V 1 R569 401 024 7400 CARBON 10K JA 126177 1
C506 403 075 0504 CERAMIC 1201' K 500V 1 R570 401 024 7400 CARBON10K JA116W 1
0507 403 067 5603 MT-CO MPO 0.1 U .1 50V 1 R571 401 027 0507 CARBON 470K JA 1l0W 1
0500 403 067 5003 MTvCOMPO 0.1 U J 50V 1 R572 401 027 0507 CARBON 470K JA1/5W 1
0570 403 030 2303 ELECT 100U M 6.3V 1 R573 401 021 3009 CARBON 5.6KJA1/4W 1
0571 403 080 8104 NPEELECT 4.7U M 50V 1 11574 401 021 3009 CARBON 5.6K JA 114W 1
0590 408 018 0509 CERAMIC 2201| K 50V 1 R575 401 0221905 CARBON 630 JA 114W 1
0591 403 010 B509 CERAMIC 220P K 5011 1 R570 401 022 1905 CARBON 680 JA 114W 1
R501 401 024 7004 CARBON 1K JA1I6W 1 R577 401 013 5301 CARBON 1.2K JA 114W 1
R502 401 024 7004 CARBON 1K JA1I6W 1 R578 401 013 5301 CAR RON 1 2K JA 174w 1
R503 401 024 7707 CARBON 100K JA 1 16w 1 R579 401 015 2704 CARBON 1 BK JA 114w 1
R504 401 024 7707 CARBON 100K JA1/5w 1 R580 401 015 2704 CARBON 1 BR JA1I4W 1
R507 401 027 5908 CARBON 66K JA 1/6W 1 R585 401 063 0202 OXIDE-MT CB JB1W 1
R508 401 027 5908 CARBON 68K .IA WW 1 R590 401 055 0005 OXIDE-MT 120 .10 WW 1
R509 401 027 2303 CARBON 560 JA1/6W 1 R593 401 016 4806 CARBON 22K JA 114w 1
R510 401 027 2303 CARBON 560 JA1/6W 1 R594 401 020 3901 CARBON 470K JA 4 1
R511 401 027 0602 CARBON 0,2K JA1/6W 1 R595 401 016 4000 CARBON 22K JA1/4W 1
R512 401 027 8602 CARBON 0.2K JA1/0W 1 R596 401 0251902 CARBON 15K JA 110W 1
R513 401 027 2105 CARBON 56 JA1IBW 1 R597 401 010 4903 CARBON 33K JA 114W 1
R514 401 027 2105 CARBON 56 JA1I6W 1
R515 401 026 7408 CARBON 39K JA1I6W 1 POWER SW. P.c. B. ASSV
R516 401 026 74011 CARBON 39K JA1/6w 1 48 1410193020641 Power sw, PCB. Assy 1
R517 401 027 8602 CARBON 8.2K JA 116w 1 42352-00970 Headphone Jack 39 (Headphones) 1
R518 401 027 8602 CARBON 8.2K JA 6141 1 42372700830 Ec Terminal 1 P 2
R519 401 027 2105 CARBON 56 JA 116W 1 11 1727622041100 W119 Wrap TermInaI 2
R520 401 027 2105 CARBON 56 JA1/sw 1 131-2-6114-00200 Cover Salety 1
R521 401 026 4005 CARBON 33K JA 116W 1 W701 44439-73053 W096 P3131181 1
R522 401 026 4605 CARBON 33K JA176W 1 5701 A 42319-76340 SW Push Power (Punter) 1
R523 402 015 5603 FUSIBLE RES 82 J-1/4W 1 570: 42319-77341 sw Pusn1 Key (Speaker AI 1
R524 402 015 5503 FUSIBLE RES 82 J- 11401 1 S703 42519-77341 sw Push 1 Key (Speaker B) 1
11525 402 015 0700 FUSIBLE RES 82 J- 114w 1 C701 A 42239-70970 Capacitor 0.01 MF400V 1
R525 402 015 5603 FUSIBLE RES 82 J~ 114W 1 R701 401 069 3009 0X1DE~MT 680 JA 2w 1
R527 402 015 3005 FUSIBLE RES 10 .I- 174W 1 R702 401 069 3009 OXIDE-MT 680 JA 2w 1
115211 402 015 3005 FUSIBLE RES 10 J< 114W 1 R703 401 017 0807 CARBON 270 JA 1/4W 1
R529 402 015 11005 FUSIBLE RES 1 D J- M 1 R704 401 017 0807 CARBON 270JA1/4W 1
R530 402 015 3005 FUSIBLE RES 10 J- 114W 1 R705 401 017 0007 CARBON 270 JA 1 MW 1
R531 402 015 9205 FUSIBLE RES 47 J- 1/4W 1 R706 401 017 0007 CARBON 270 JA 1/4W 1
R532 402 015 9205 FUSIBLE RES 47 Jr 1I4W 1
R533 402 0154705 FUSIBLE RES 47 J-I/AW 1 SPEAKER TERMINAL P.C.B. ASSY
R534 402 015 9205 FUSIBLE RES 47 J-1/4W 1 40 141v0-1939-20651 Speaker Terminal PCB. Afiy 1
R535 402 015 3700 FUSIBLE RES 2.2 \1- 1/4W 1 42372-01100 SP RP Terminal (Speaker) 1
R533 402 015 3708 FUSIBLE RES 2.2 J- 1/4W 1 W702 42439-73065 W1 re 2 Parallel 1
R537 402 015 0406 FUSIBLE RES 2.2 J-1/4W 1 C703 403 0691504 CERAMIC 1000P K 50V 1
R538 402 015 8405 FUSIBLE RES 2.2 J- 114W 1 C704 403 0691504 CERAMIC 1 00°F K 50V 1
R539 401 027 5908 CARBON 60K JA 116w 1 0705 403 0691504 CERAMN: 1000? K 50v I
R540 401 027 5908 CARBON 60K JA 1/6W 1 C706 4113 009 1504 CERAMIC 1ODOP K 50V 1
R541 402 015 5107 FUSIBLE RES 3:10.1- 1/2w 1
R542 4020165107 FUSIBLE RES330J-1IZW 1 BIAS P.C.B.ASSY
R543 42219470370 Cement 0.22162 5W 1 50 141-0-1939-20600 Bias P.C.B. Assy 2
R544 4-2219-70370 Cement 0.22:2 5W 1 0601 407 008 0405 DIODE CMBO1 -BT 1
R545 401 019 5203 CARBON 47 .IA 174w 1 0601 405 026 0003 TR 280947 1
R545 401 019 6203 CARBON 47 JA MW 1
R547 401 0581207 OXIDE-MT1OJB1W 1 LAMP P.C.B. ASSV
R548 401 0581207 OXIDE-M110 JB1W 1 51 141-0493923290 Lama PCB. A581! 1
R549 401 024 7707 CARBON 100K JA116W 1 111-24322041100 Wire Wrap Terminal 4
R550 401 024 7707 CAB BON 100K JA11BW 1
R551 401 025 4606 CARBON 1BKJA1I6W 1 ""55: _
R552 4010202904 CARBONHK JA1I4W 1 1. Parts order must contain Model Number. Part Number and
11559 4010231705 cmeouammmw 1 Descrim'm _

2. Ordering quantity of screws and resisIors n1 ust be m uItIpIa or

10 pcs.