GRAPHTEC WR1000 Service Manual page 13

3. DISASSEMBLY AND REASSEMBLY
(4) Remove the six screws, then replace the amp mother board.
M3L4 binding-
M3L4 binding-
head screw
M3L4 binding-
head screw
During reassembly, be sure to connect each cable to its proper connector.
Check Procedures
(1) Short check
Regarding the "
-
between the connector pins specified in the following table.
Table 3-2-1. Short check
Connector pin no.
P102 to P802
P103 to P803
P3
(2) Voltage check
WR1000-UM-251–01–9380
head screw
" mark as the minus side of the multimeter, use the multimeter to check the voltage
Checkpoint
+
1
1
91 to 94
95 to 96
97 to 98
Absent from the 8-channel model
Amp mother board
Fig. 3-2-8
-
2
2
99 to 100
99 to 100
99 to 100
Fig. 3-2-9
3 – 4
M3L4 binding-
head screw
M3L4 binding-
head screw
Remarks
+5 V (amps with odd channel nos.)
+5 V (amps with even channel nos.)
+5 V
+3.3 V
+3.3 V1
M3L4 binding-
head screw