Nexo NXAMP4X1 Service Manual

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
C201C201
R213R213
C344 C354
C345 C355
C357
C356
C348
C347
C319
D305
220 ohms/
10W
220 ohms/
10W
220 ohms/
10W
220 ohms/
10W
220 ohms/10W220 ohms/10W
220 ohms/10W
220 ohms/10W220 ohms/10W
220 ohms/10W220 ohms/10W
220 ohms/10W
D306D306
1
3
4
2
CN316CN316
CN307 CN305CN307 CN305 CN308 CN309CN308
CN310CN310
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

Nexo NXAMP4X1 Specifications

General

Brand	Nexo
Model	NXAMP4X1
Category	Controller
Language	English