Pioneer krp-m01, Service Manual

Page: 35 / 131

35
KRP-M01
5 6 7 8
5 6 7 8
A
B
C
D
E
F
Yes
N o
Yes
Yes
Yes
W hen the MR is replaced, is the
problem resolved?
Is the relay port of the connector (Pin 25 of
C
N 4203) between the MR MAI N BLOCK
Assy and MR PO W ER SUPPLY Unit high
(3.4 V )?
Is the relay port of the connector (Pin 13 of
C
N 4501) between the Display MAI N Assy
and Display PO W ER SUPPLY Unit high
(3.4 V )?
Yes
N o
[SM for the MR]
Failure analysis of the MR MAI
N BLOCK Assy => MA2
N o
[SM for the MR]
Failure analysis of the MR PO
W ER SUPPLY Unit => PS2
[SM for the Display]
Failure analysis of the Display MAI
N Assy => PM2
Power-On-Related Problems
The red LED on the Display
flashes.
[SM for the Display]
See “5.3 DIAG
N OSIS OF PD (PO W ER-DO WN ).”
PD/SD-Related Problems
[SM for the Display]
Failure analysis of the Display PO
W ER SUPPLY Unit => PP2
The red LED on the MR flashes.
[SM for the MR]
See “5.3 DIAG
N OSIS OF PD (PO W ER-DO WN ).”
On the Display, the red and blue
LEDs alternately flash.
On the MR, lit in red LED.
System-Connection-Related Problems
W hen the system cable is replaced,
is the problem resolved?
Replace the system cable.
N o
W hen the MR is replaced,
is the problem resolved?
Failure in IC7602 or its peripheral circuits.
Replace the MR MAI
N BLOCK Assy.
N o
Failure in IC5001 or its peripheral circuits.
Replace the Display MAI
N Assy.
The blue LED on the Display
flashes.
[SM for the Display]
See “5.4 DIAG
N OSIS OF SD (SHUTDO WN ).”
The blue LED on the MR flashes.
[SM for the MR]
See “5.4 DIAG
N OSIS OF SD (SHUTDO WN ).”
Power-down will not be activated if the drive is off.
Note:
Only when the system is powered in response to the PO W ER key on the remote control unit
and if it is in trouble do the LEDs flash in this way. If the units are turned on with their PO W ER
keys or with the RS-232C command, even if the system is in failure, the red LEDs on the display
and the MR light.