NXAMP4x1
5
C323
C322
C317
C316
C324
C318
C325
C205
C344
C354
C345
C355
C357
C356
C348
C347
C319
C323
C322
REAR
FRONT
C317
C316
C324
C318
C325
C205
C201
C201
R213
R213
C344
C354
C345
C355
C357
C356
C348
C347
C319
D305
220 ohms/
10W
220 ohms/
10W
220 ohms/
10W
220 ohms/
10W
220 ohms/10W
220 ohms/10W
220 ohms/10W
220 ohms/10W
220 ohms/10W
220 ohms/10W
220 ohms/10W
220 ohms/10W
D306
D306
1
3
4
2
CN316
CN316
CN307
CN305
CN307
CN305
CN308
CN309
CN308
CN310
CN310
CN309
6
7
5
■
SERVICE PRECAUTIONS
Safety measures
•
Some component parts on the PSANH circuit board main-
tain a high voltage even when the power is switched off.
For this reason to avoid an electrical shock, do not touch
the upper metallic part of the following capacitors until
the remaining voltage has discharged.
[Discharging Method]
Before starting the service work, connect discharging
resistors (220 ohms 10W) to the terminals indicated in
the figure below to discharge electricity. (7 points)
The required discharging time is about 10 seconds. Check
that the DC voltage between the terminals measures close
to 0 (zero) volts using a multi-meter to make sure that the
discharge is completed.
Note:
Do not touch the IC201 and its heat sink before discharg-
ing the C205.
PSANL circuit board
C316, C317, C322, C323
C318, C319, C324, C325
C344, C354
C345, C355
C347, C356
C348, C357
C205
1
2
3
4
5
6
7
D305: + pin <=> D305: - pin
D306: + pin <=> D306: - pin
CN305 <=> CN316
CN307 <=> CN316
CN308 <=> CN309
CN310 <=> CN309
R213: lead <=> C201
Capacitors
Discharging point
Summary of Contents for NXAMP4X1
Page 36: ...NXAMP4x1 36 B B CONTROL Circuit Board Pattern side 2NA WJ97120 10 2 ...
Page 37: ...NXAMP4x1 37 B B Pattern side 2NA WJ97120 10 2 ...
Page 40: ...NXAMP4x1 40 OUTANL Circuit Board 2NA WJ97320 10 Pattern side ...
Page 44: ...NXAMP4x1 44 B B PN AN Circuit Board 2NA WJ97170 10 1 Pattern side ...
Page 45: ...NXAMP4x1 45 2NA WJ97170 10 1 B B Pattern side ...
Page 49: ...NXAMP4x1 49 2NA WJ97350 50 B A Component side Reduction 7 10 ...
Page 50: ...NXAMP4x1 50 B B PSANL Circuit Board 2NA WJ97350 50 Pattern side Reduction 7 10 ...
Page 51: ...NXAMP4x1 51 B B 6 5 4 3 2 1 7 8 9 10 11 12 2NA WJ97350 50 Pattern side Reduction 7 10 ...
Page 123: ...PA 011884 ...