40
SC-57
1
2
3
4
A
B
C
D
E
F
1
2
3
4
This is just for general reference and does not including every single case.
12V Trig
RS-232C
RF Remote
IR/SR
12VTrig
IR/SR
RS-232C
Check INTERFACE ASSY
CN7002 4pin +12V
No
Remote Control
Check the signal path of
IR-IN,SR-IN,RMC
INTERFACE ASSY
CONNECT ASSY
DIGITAL MAIN ASSY
DISPLAY BRIDGE ASSY
DISPLAY ASSY
No
Yes
Diagnose COMPONENT ASSY
(arround IC8601)
or replace COMPONENT ASSY
No
Diagnose INTERFACE ASSY
(IR,SR circuits)
or replace INTERFACE ASSY
RF Remote
No
INTERFACE ASSY
JA7002 1pin +5V
Yes
Check INTERFACE ASSY
C7108 +5.6V
No
Is 232C OK?
NG
OK
It's problem of the RF
Receiver Box or RF
Remote Controller
No
Diagnose INTERFACE ASSY
(Circuits arround Q7008,Q7010)
or replace INTERFACE ASSY
Yes
Check V+12_TRG power supply path
REG ASSY
FRONT BRIDGE ASSY
FB CONNECT ASSY
INTERFACE ASSY
ALL NG
Other results Repair or replace
NG point
Diagnose REG ASSY
(Circuits arround IC7611)
or replace REG ASSY
Still NG
Check the signal path of 232RX,232TX
COMPONENT ASSY
DIGITAL MAIN ASSY
DISPLAY BRIDGE ASSY
DISPLAY ASSY(IC3001)
and check the power supply path of V+5R6_EV
PRIMARY ASSY
DIGITAL MAIN ASSY
COMPONENT ASSY
No
Diagnose INTERFACE ASSY
(circuits arround Q7022)
or replace INTERFACE ASSY
Yes
Check the power supply of
V+5R6_EV
PRIMARY ASSY
DIGITAL MAIN
ASSY
CONNECT ASSY
INTERFACE ASSY
NG
Repair or replace
NG point
No problem
Diagnose DISPLAY ASSY
(IR,SR,RMC signal path,
arround U3201)
or replace DISPLAY ASSY
OTHER
No
Содержание SC-LX75
Страница 24: ...15 SC 57 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 36: ...27 SC 57 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 105: ...96 SC 57 1 2 3 4 A B C D E F 1 2 3 4 10 3 AUDIO ASSY 3 3 A 3 3 ...