VRX775VD
VRX776VD
- 12 -
Operating NAVI,
No sound
OK
Confirm
the voice input of
DSP IC
Malfuntion of IC102
NG
Check DSP circuit
No operating radio
Voltage check
pin5,6 of BL101
8.5v,5v
OK
OK
NG
Check wave
TUN-SDA, SCL signal
Defective of BL101
Malfuntion of
Q102, Q104, IC103
Defective of BL101
NG
Check wave
DSP-SDA, SCL signal
OK
Defective of IC104
NG
Operating radio,
No stop Broadcast
weak reception
Check
the antenna
OK
OK
NG
Voltage check
pin5,6 of BL101
8.5v,5v
Defective of BL101
Malfuntion of
antenna connection
Defective of
Q102, Q104, IC103
NG
Confirm
the reading of
parameter
OK
OK
Confirm
each item point
of parameter
NG
Rewriting
the parameter
Defective of
IC501, IC502
NG
Tuner section
No work of remote-controll
Check
REM5V line
of J1101
OK
NG
Check
signal output of
IR1101
Defective of IC501
Malfuntion of
REM5V line of Main
Defective IR1101
NG
OK
Remoto controll section
NAVI section
No loading CD/DVD,
No eject
Voltage check
4pin of IC304(DVD9V)
OK
OK
NG
Does
the disc detective
work?
Defective of
DVD mechanism
Defective of
IC304, flexible pwb,
J301
Malfuntion of
DVD mechanism
(detective parts),
Escutcheon section
NG
Is disc caught?
OK
OK
NG
Malfuntion of
DVD mechanism
(loading parts)
CD or DVD is loaded, ejected
No playing normally
Malfuntion of
DVD mechanism,
Escutcheon section
used DISC
NG
Check
the disc
OK
OK
NG
Voltage check
DVD5V, 3.3V,
1.8V line
Malfuntion of
DVD mechanism
Confirm
error display,
region number,
parental level
Defective of IC302,
IC303, Q301, Q303
flexible pwb, J301,
DVD mechanism
NG
Check
the mechanism
Communication
OK
OK
Check
the farmtware
NG
Writing the version of
PAL farmware
Defective of
J301, flexible pwb,
DVD mechanism
NG
Does it
stop of movement
in time-out
CD/DVD section