Pioneer XV-BD122B, Руководство по обслуживанию, Страница: 13 / 85

13
XV-BD422B
5 6 7 8
5 6 7 8
A
B
C
D
E
F
Remote control unit does not function
Remote control unit does not function
Yes
Yes
Is the battery of the remote
control exhausted?
No
No No
No
Replace the battery for remote
control.
Is remote control signal on
IR601 of FRONT BOARD
Assy normal?
Is there 3.3 V on XP3 pin 9
of FRONT BOARD Assy?
Is there remote control
signal on XP13 pin 13 of
MAIN BOARD Assy?
Yes
Yes
Replace the MAIN BOARD Assy.
Replace the FRONT BOARD Assy.
No audio output
No audio output
Yes
Yes
Yes
Yes
Are AMP IC (U710 to U713)
normal?
No
Replace U710 to U713.
Replace the speaker.
Is the +34 V voltage on AMP
board normal?
Are the output of U714 normal?
(U714: pin 40-47, pin 49-52)
Is the VALID signal (R774) high?
No
Refer to "NO +34 V output".
Are there signals of I2S?
(XP703: Pin 18, 20 to 24)
No
Check the connect line.
No
Replace U714.
Can’t read disc or can’t open the tray
Can’t read disc or can’t open the tray
Yes
Is the rotation of the
LOADER Assy normal?
No
Check the connection 4 pin cable
from the MAIN BOARD Assy.
Chek the soldering of R204 and
R205 are normal, or replace the
MAIN BOARD Assy.
No
Check the soldering of R946 and
R947 are normal. Check the voltage
of U11 (Pin 3) is OK. (about 12 V)
Yes
Are 45 pin and 8 pin cables
of MAIN board connected to
the LOADER Assy properly?
No
Connect those cables tightly.
Replace the LOADER Assy.
Is the voltage of
U11 (Pin2) normal?
(about 9 V)
No
Yes
Yes
Are R204, R205 normal?
(The voltage between two
resistance is 1.5 V.)
No display on VFD, and buttons do not work
Yes
No display on VFD,
and buttons do not work
Are the supply voltages
on MAIN BOARD Assy
normal?
1. Be soldered properly between
U135 and pins of VFD on
FRONT BOARD Assy?
2. Is not a circuit connected to
K135 to K140 and S608 broken?
Is there -24 V on pin 5, 12 V
on pin 7, 3.3 V on pin 9 of XP13
of MAIN BOARD Assy?
No
No
No
Solder parts again,
be connected correctly.
Solder parts again.
Yes
Yes
No
Replace the FRONT BOARD Assy.
Replace the FRONT BOARD Assy.
Are Q7, Q207, Q209,
U1 to U4, U15 performed
soldering of normally?