Sanyo JA 760 Service Manual

Page 1

SERVICE 'MANUAL A
75 SANYo

JA 760

(EUROPE)

POWER AMPLIFIER

TABLE OF CONTENTS
SPECIFICATIONS . . ............................................................... 1
PARTS LIST (REMOTE CONTROLLER) ................................................. 1
CABINET & CHASSIS EXPLODED VIEW (REMOTE CONTROLLER) ............................ 2
SCHEMATIC DIAGRAM (REMOTE CONTROLLER) ......................................... 3
WIRING DIAGRAM (REMOTE CONTROLLER) ............................................ 4
IC BLOCK DIAGRAM (REMOTE CONTROLLER) ........................................ _, » 5
DISASSEMBLY INSTRUCTIONS ..................................................... 6-7
BLOCK DIAGRAM ................................................................ 8
TRANSMISSION SIGNAL FROM REMOTE CONTROLLER ................................... 9
MICROCOMPUTER & ITS FUNCTIONS .......................................... 10-11
SYSTEM CONTROL BY MICROCOMPUTOR ......................................... 12
PRINCIPAL OPERATIONS ..... i .............................................. 13-14
CABINET 8t CHASSIS EXPLODED VIEW ............................................... 15
PARTS LIST .................................................................. 16~21
SCHEMATIC DIAGRAM ........................................................ 22-29
WIRING DIAGRAMS ........................................ ' ................... 30-33
IC BLOCK DIAGRAMS . . , ....................................................... 34-36
BIAS CURRENT ADJUSTMENT ...................................................... 37

WM-16309

Page 2

Continuous output power: 1

Input sensitivity and
impedance:

Frequency response:
Graphic equalizer:

Loudness control response
(Vol. -30 dB):

Signal to noise ratio:
Power requirements:

NOTE:

The power switch is mounted on th

off.

NOTE:
* Materials of Capacitors and Resistors are abbreviated as
follows;
AL ELECT .......... Aluminum Electrolytic
BC CON . . . . . Semiconductor Ceramic
CHIP BC ......... Chip Semiconductor Ceramic
CHIP TAN .......... Chip Tantal
ELECT ............ Electrolytic
PP CON ........... Polypropylene
MT GLAZE .......... Metal Glaze
FP CARBON ........ Flameproof Carbon

oned specifications
fications bas

100 W x 2.(at Bohms, 0.3%

'distortion)

PHONO; 2.5 mV/47 kohms
ITV/VIpEO/c ,:

TKO nifV/47 ko'hm's
20 Hz-35 kHz (TV/VIDEO)
:10 dB (63/250/1000/4000/
16000 Hz)

+8 dB/+4 dB (100 Hz/lOkHZ)
95 dB (TV/VIDEO)
AC: 220 V, 50 Hz

or other standards.

Power consumption:
AC outlets (SWITCHED):
Dimensions (W x D x H):

Weight:

520 W

100 W max.

Approx. 420 x 270 x130 mrn
(16-1/ x10-5/ x 5-1/8")
Approx. 9 kg (20 lbs.)

RB 760 REMOTE CONTROLLER

Power requirements:
Dimensions (W x D x H):

Weight:

DC: 3 V, "RB/AA/SUM-3
battery x 2

Approx. 55 x 20 x 167 mm
(2-3/16 x13/16 x 6-5/8)
Approx. 110 g (4 025.)
(including batteries)

Specifications subject to change without ontice.

unit from AC-power, even when switched

PACKING & ACCESSORIES

* Tolerance of Capacitors and Resistors are noted with

follow symboles;

J .................. 15%
K .................. :10%
M ................ 120%

P ............ +1oo~0%
Q ............ +3n-10%
Z ............ +80-20%

REMOTE CONTROL Pce ASSY

lift Part No. Description gift Part No. Description
0. 0.
UPS-2311213400 INNER POLVE COVER 50 141-4-285T75Q500 P.C BOARD ASSY,
REMOTE CONTROL
X 4-266T-olsoo CERAMIC RESONATOR
CABINET 8 CHASSlS IC SIUPoeioze+++ Ic UPDGIOZG MFZO
Ref 4 4 TR STD1468R+++++ TR 2sD14ss R
No. Part NO- DeSCrlpflon 01 SLSE303A+++++ LED SE303A
' D2 SDDAN201+++++ DIODE DAN201
1 141-0-124T-501m TOP LID ASSY D3 SDDAN201+++++ DIODE DAN201
2 I41-z-125T-4wuo BOTTOM LID c1 co+5a lleDYBS CERAMIC 100PF 50v K D YB
3 141-2-128T-25200 BATTERY LID 02 cc+5010'1KDYBs CERAMIC 100PF 50v K D vs
4 141-2-132T-27400 SIGN WINDOW C3 CE5R3107MVAKS ELECT mow-sew M v AK
5 141-27160T-67701 PUSH BUTTON R1 Rc +4010JP++R CARBON P 1 OHM J 1/4w R25
6 141-2-382T-23400 TERMINAL R2 RC +4470JP++R CARBON P 47 OHM J1/4WR25
7 141-2-382T-23500 TERMINAL
8 14127856T760900 SPRING COIL