59
KRP-M01
5
6
7
8
5
6
7
8
A
B
C
D
E
F
How to Dia
g
nose the PD
Frequency
of LED
Flashing
History
Indication in
Factory Mode
Assy
Cause of power-
down (activated
protection circuit)
Point to be
Checked
Possible Defective Parts
Red,
once
MR-P
W
R
MAI
N
BLOCK
Assy
Overcurrent in
6.5
V
power
5
V
_A
N
T-REG
IC4305, C4305
5
V
_IO-REG
IC4310, C4301
3CH-DD
converter
IC4402
C4405, C4406, C4409, C4463, C4464, C4466 to C4468
FET
Q4417, Q4416, Q4411
1CH-DD
converter
IC4501, C4517
Overcurrent in
12
V
power
FA
N
-REG
IC4302, C4342
8
V
_IO-REG
IC4309, C4315
L
N
B
IC4503
Overcurrent in
17
V
power
12
V
_IO-REG
IC4308, C4303
Overcurrent in
3.4
V
power
1.8
V
_IO-REG
IC4604, C4609
C4820, C8103
PO
W
ER
SUPPLY
Unit
V
+6.5
V
U
V
P
TP
V
+6.5
V
V
oltage drop due to overcurrent on the load side
V
+12
V
U
V
P
TP
V
+12
V
V
oltage drop due to overcurrent on the load side
V
+17
V
U
V
P
TP
V
+17
V
V
oltage drop due to overcurrent on the load side
STB3.4
V
OCP
TP STB3.4
V
C151, C153, C152, D152, or Z152, and abnormal current on the load
side that is connected to STB3.4
V
power
STB5.1
V
OCP
TP STB5.1
V
C155 and abnormal current on the load side that is connected to STB5.1 V power
And abnormal current on the load side that is connected to STB5.1 V power
V
CC
OCP
TP
V
+6.5
V
D351, C351, C352, C353, and abnormal current on the load side that is connected to V+6.5V power
TP
V
+12
V
D352, C357, C358, and abnormal current on the load side that is connected to V+12V power
TP
V
+17
V
D353, C359, and abnormal current on the load side that is connected to
V
+17
V
power
STB3.4
V
O
V
P
TP STB3.4
V
PC121
V
CC
O
V
P
TP
V
+6.5
V
PC301, Breakage in the line to/from the P2 output connector
TP
V
+12
V
STB3.4
V
TSD
Z121 control IC and abnormal current on the load side that is connected
to STB3.4
V
power
V
+6.5
V
Rectifier diode (D351)
TSD
D351 or D352, and abnormal current on the load sides that is connected
to
V
+6.5
V
and
V
+12
V
Note:
Although replacement of the whole PO
W
ER SUPPLY Unit is required (replacement of only defective parts on the PO
W
ER SUPPLY Unit is not possible),
the circuit symbols are described for reference
Summary of Contents for krp-m01
Page 8: ...8 KRP M01 1 2 3 4 A B C D E F 1 2 3 4 2 3 PANEL FACILITIES ...
Page 9: ...9 KRP M01 5 6 7 8 5 6 7 8 A B C D E F Remote Control Unit ...
Page 14: ...14 KRP M01 1 2 3 4 A B C D E F 1 2 3 4 4 BLOCK DIAGRAM 4 1 OVERALL WIRING DIAGRAM ...
