Troubleshooting - Clarion NX700 Service Manual

TROUBLE SHOOTING
General
NO POWER
CHECK ITEM
1 POWER SUPPLY
2 4V POWER SUPPLY
3 OSCILLATION OF X501
4 RESET IC
5 B/U-6V-DET
6 B/U-9V-DET2
7 ACC-DET
8 SYSTEM CONTROLLER(IC503)
KEY OPERATION TROUBLE
CHECK ITEM
1 KEY CONDITION
2 SWITCH CONDITION
3 INPUT OF IC503
4 SYSTEM CONTROLLER(IC503)
RADIO TROUBLE
CHECK ITEM
1 ANTENNA
2 SEEK
3 AV8.5V POWER SUPPLY
4 OUTPUT OF SIGNAL
5 AUDIO LINE
Audio
AUDIO OUTPUT TROUBLE (SPEAKER AND LINE OUT)
CHECK ITEM
1 OFFSET DET
2 AV8.5V POWER SUPPLY
3 E-VOL
4 AUDIO-GND
5 OUTPUT OF E-VOL
6 MUTE
7 SYSTEM CONTROLLER(IC503)
AUDIO OUTPUT TROUBLE (SPEAKER)
CHECK ITEM
1 SPEAKER
2 AMP-STB,AMP-MUTE
3 INPUT SIGNAL
4 AUDIO LINE(C324,C325,C326,C327)
AUDIO OUTPUT TROUBLE (LINE OUT)
CHECK ITEM
1 AMP-REM
2 GUARD OF REM
3 RCA
4 AUDIO-GND
5 EXTERNAL AMP
NX700/NX700E
CHECK POINT
WIRE CONNECTIONS
FUSE
CONNECTORS
BATTERY
4V STB
Q634,IC602
X501
IC506
IC504,R580,R587
IC505,Q501
IC505,Q502,Q503
CHECK POINT
KEYS
SWITCHES
J901(PANEL-B),FPC,J105(PANEL-A)
CHECK POINT
CONNECTION OF ANTENNA
AROUND IC101(TUNER IC)
Q620,Q621
PINS 8 AND 9 OF IC101
(AUDIO SIGNAL)
CHECK POINT
CONNECTION OF SPEAKERS
INPUT DC OF IC601(POWER IC)
Q620,Q621
IC209(E-VOL), IC503
AUDIO-GND LINE
PINS 12,13,14,19,20 AND 21 OF
IC209(AUDIO LINE)
Q203,Q204,Q205,Q206,Q207,
Q208,Q209,Q210
CHECK POINT
CONNECTION OF SPEAKERS
IC601(POWER IC)
IC601(POWER IC)
CHECK POINT
CONNECTION OF AMP-REM
AMP-REM,A-ANT LINE
CURRENT CONSUMPTION
CONNECTION OF RCA
GND OF EXTERNAL AMP
AUDIO OUTPUT TROUBLE (RADIO MODE)
CHECK ITEM
1 AUDIO OF TUNER IC
2 AROUND IC101(TUNER IC)
AUDIO OUTPUT TROUBLE (CD/DVD MODE)
CHECK ITEM
1 I2S
2 AROUND IC200(DAC)
AUDIO OUTPUT TROUBLE (AUX1)
CHECK ITEM
1 RCA
2 INPUT OF IC209(E-VOL)
3 AROUND IC209(E-VOL)
AUDIO OUTPUT TROUBLE (NAVI GUIDE)
CHECK ITEM
1 CONNECTION
2 INPUT OF IC209(E-VOL)
3 AROUND IC209(E-VOL)
Radio
RADIO DOES NOT WORK
CHECK ITEM
1 AUDIO8.5V
2 LINE OF TUNER
3 TUNER IC(IC101)
RECEIVE/SEEK TROUBLE
CHECK ITEM
1 ANTENNA
2 GUARD OF ANT
3 AUDIO8.5V
4
READING OF PARAMETER
5 PARAMETER
6 TUNER IC(IC101)
- 8 -
CHECK POINT
PINS 8 AND 9 OF IC101(TUNER IC)
C220,C221
CHECK POINT
CONNECTION OF DVD MECHANISM
FPC, J401
CHECK POINT
CONNECTION OF RCA
CONNECTORS
AROUND IC205(AUX1 GAIN)
CHECK POINT
CONNECTIONS
CONNECTORS
FRONT SPEAKER
AROUND IC207(NAVI+/-)
CHECK POINT
L108,L109(VCC LINE)
R106,R107,
L222,L223
CHECK POINT
CONNECTION OF ANTENNA
AMP-REM,A-ANT LINE
CURRENT CONSUMPTION
L108,L109(VCC LINE)
IC503(SYSTEM),IC507(E2PROM)
READJUST