Pioneer SC-65 Service Manual page 38

1
OTHER
This is just for general reference and does not including every single case.
A
12V Trig
No
12VTrig
RS-232C
No
RS-232C
B
RF Remote
No
RF Remote
C
IR/SR
IR/SR
No
Remote Control
No
D
Check the signal path of
IR-IN,SR-IN,RMC
INTERFACECONNECT
DIGITAL MAINV-REG
DISPLAY ASSY
No problem
Diagnose DISPLAY ASSY
(IR,SR,RMC signal path,
arround U3201)
or replace DISPLAY ASSY
E
F
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1
2
Check INTERFACE ASSY
No
CN7011 18pin +12V
Yes
Diagnose INTERFACE ASSY
(Circuits arround Q7008,Q7010)
or replace INTERFACE ASSY
Diagnose COMPONENT ASSY
Still NG
(arround IC8601)
or replace COMPONENT ASSY
INTERFACE ASSY
Yes
JA7002 1pin +5V
No
Check INTERFACE ASSY
Yes
C7108 +5.6V
No
Check the power supply of V+5R6_EV
PRIMARYDIGITAL MAINCONNECT
INTERFACE ASSY
Diagnose INTERFACE ASSY
Yes
(IR,SR circuits)
or replace INTERFACE ASSY
Repair or replace
NG
NG point
2
3
Check V+12_TRG power supply path
V- REGINTERFACE ASSY
ALL NG
Diagnose V-REG ASSY
(Circuits arround IC7551)
or replace V-REG ASSY
Check the signal path of 232RX,232TX
COMPONENTDIGITAL MAINV-REG -
DISPLAY ASSY (IC3001 )
and check the power supply path of V+5R6_EV
PRIMARYDIGITAL MAINCOMPONENT ASSY
NG
OK
Is 232C OK?
Diagnose INTERFACE ASSY
(circuits arround Q7022)
or replace INTERFACE ASSY
SC-65
3
4
Other results
Repair or replace
NG point
It's problem of the RF
Receiver Box or RF
Remote Controler
4