JVC 250 User Manual
Page 165
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Chapter 7---Troubleshooting
Model 250 Service Manual
7-27
Figure 7-18
Backplane Diagram (middle section)
The following is a list of pins that would be helpful for troubleshooting purposes.
Low Voltage Power Supply (J8)
High Voltage Power Supply (J7)
Pin #
Signal or Voltage
Pin #
Signal or Voltage
8 /LV_ENA
5
/HV_OK
9 /LV_OK
8
+80
V
10
+24 V_FANS
9
+15 V
11
_5.1 V Stdby
10
-15 V
12
+5.1 V
11
G1 SUPPLY
13 +6.2
V
12
/VA_OK
14 +15
V
1-4
GND
15 -15
V
16 +80
V
17 /COVER_ON
18 /FAN_ENA
1-7
GND
Arc Lamp Power Supply (9)
Pin #
Signal or Voltage
2 /LAMP_LIT
3 /LAMP_OK
4 /LAMP_ENA
5 /COVER_ON
1, 6
GND
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