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Safety NoticeTechnical
specification--------------------------------------------
Operation InstructionsMechanical
Disassemblies---------------------------------------28Cabinet parts
List ----------------------- ----------------- -----------29
--------------------------------------------------------23-4
Chassis Block
Diagram---------------------------------------------5IC Block
Diagram
--------------------------------------------------6-12Transistor
mark ----------------------------------------------------13Chassis
wiring diagram ----------------------- ----------------- ----14
PCB Top layer ----------------------------- -----------------
----15-17Service Adjustments ----------------- ------------------
----------18-21Purity and Convergence Adjustment -----
----------------- -----22Control Location
---------------------------------------------------23Input and
Output Terminals--------------- ----------------- --------24
---------------------------------------25-27
Circuit
Diagram-----------------------------------------------------30
Safety Notice
Contents
-2-
SAFETY PRECAUTIONS
1:An isolation transformer should be connected in the power line
between the receiver and the AC line when a service is performed on
the primary of the converter transformer of the set.2:Comply with
all caution and safety-related notes provided on the cabinet back,
inside the cabinet, on the chassis or the picture tube.3:When
replacing a chassis in the cabinet, always be certain that all the
protective devices
are installed properly,such as,control knobs, adjustment covers
or shields, barriers,isola- tion resistor-capaci tor networks etc..
Before returning any televis ion to the customer,theservice technic
ian must be sure that it is completely safe to operate without
danger ofelectrical shock.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the
picture tube. The picturetube is specially constructed to limit
X-RADIATION emissions. For continued X-RADIATIONprotect ion, the
replacement tube must be the same type as the original including
suffixletter. Excessive high voltage may produce potentially
hazardous X-RADIATION. To avoidsuch hazards, the high voltage must
be maintained within specified limi t. Refer to this
service manual, high voltage adjustment for specific high
voltage limit. If high voltage exce-eds specfied limits, take
necessary correct ive action. Carefully follow the instructions
for+B1 volt power supply adjustment, and high voltage check to
maintain the high voltagewithin the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement
is made in any areaof a receiver. Components indicated by mark in
the parts list and the schematic diagramdesignate components in
which safety can be of special signif icance. It is particu
larlyrecommended that only parts designated on the parts list in
this manual be used for com-
ponent replacement designated by mark . No deviations
fromresistance wattage or vol-tage ratings may be made for
replacement items designated by mark .!
!
!
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IC Block Diagram
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IC403(AN5891)
[Application Circuit]
[Application Circuit to get L + R output instead of Super Bass
Boos]t
1 2 3 4 5 6 7 8 9 10 11 12
131415161718192021222324MODE Vcc RIN Vref RBBB RT BLD TD ROUT
SDA SCL
AGC SURR Tone
Control
VolumeControl
Balance/MUTE
PFI AGC LIN PF2 PF3 PF4 GND LT LB BD VD LOUT
+
+
Control
+
+
+ + + + + + + +
10u
15n 0.1u
33n
10u 10u 10u 0.68u 0.1u
10n 10u 10u 10u
SDA SCLRout
2.2k
+ + + + +
39n10u
33n 10n 10u 10u 10u
220k
Lin Lout
1 2 3 4 5 6 7 8 9 10 11 12
131415161718192021222324MODE Vcc RIN Vref RBBB RT BLD TD ROUT
SDA SCL
AGC SURR ToneControl
VolumeControl
Balance/MUTE
PFI AGC LIN PF2 PF3 PF4 GND LT LB BD VD LOUT
+
+
Control
+
+
+ + + + + + + +
10u
15n 0.1u
33n
10u 10u 10u 0.1u
10n 10u 10u 10u
SDA SCLRout
2.2k
+ + + + +
39n10u
33n 10n 10u 10u 10u
220k
Lin Lout
Vcc Rin
Vcc Rin
10u
L+R Out
