Service Guide
35
DC Output:
With the DMM set to measure DC voltages, measure the voltages at
the POWER connector on the bottom of the print engine controller board for
+3.3VDC, +5 VDC, +12 VDC and +32 VDC. (You must remove the right side
cover and right shield plate to access the engine controller board.)
If the voltages are not correct, inspect the wiring harness connecting the POWER
connector of the engine controller board to the CN1 connector of the low-voltage
power supply. If the harness is undamaged, replace the power supply.
If DC voltages are not being output by the power supply, proceed to the next step,
“Inspecting the low-voltage power supply fuse” on page 36.
If the +5 and +32 VDC voltages measure correctly, but the printer does not operate
correctly, then proceed to the topic, “Safety interlocks” on page 36.
POWER Connector pinout
Pin
Voltage/Signal Level
Pin
Voltage/Signal Level
1
+12 VDC
16
+3.3 VDC
2
No connection
17
+3.3 VDC
3
Ground
18
+3.3 VDC
4
Ground
19
32 V
5
Ground
20
Ground
6
Ground
21
No connection
7
+32 VDC
22
No connection
8
+32 VDC
23
Ground
9
+32 VDC
24
Ground
10
+32 VDC
25
Ground
11
+5 VDC
26
Ground
12
+5 VDC
27
Ground
13
+5 VDC
28
Ground
14
+5 VDC
29
No connection
15
+3.3 VDC
30
24 VDC
Summary of Contents for 1235N - Phaser Color Laser Printer
Page 14: ...xiv Phaser 1235 Network Color Printer ...
Page 34: ...20 Phaser 1235 Network Color Printer ...
Page 78: ...64 Phaser 1235 Network Color Printer ...
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Page 203: ...Service Guide 189 Figure 1 Cabinet FRUs ...
Page 205: ...Service Guide 191 Figure 2 Top cover FRUs ...
Page 207: ...Service Guide 193 Figure 3 Printer chassis FRUs 1 of 2 ...
Page 209: ...Service Guide 195 Figure 4 Printer chassis FRUs 2 of 2 ...
Page 211: ...Service Guide 197 Figure 5 Paper tray FRUs ...
Page 213: ...Service Guide 199 Figure 6 Paper tray guide FRUs ...
Page 215: ...Service Guide 201 Figure 7 Multi sheet bypass feeder FRUs ...
Page 217: ...Service Guide 203 Figure 8 Electrical components FRUs ...
Page 219: ...Service Guide 205 Figure 9 Duplexer unit ...
Page 221: ...Service Guide 207 Figure 10 LowerTray Assembly FRUs ...
Page 229: ...Service Guide 215 Wiring Diagram Wiring diagram part 1 of 3 ...
Page 230: ...216 Phaser 1235 Network Color Printer Wiring diagram part 2 of 3 ...
Page 231: ...Service Guide 217 Wiring diagram part 3 of 3 ...
Page 233: ...Service Guide 219 Wire routing at the top of the engine controller board Tie wrap ...
Page 234: ...220 Phaser 1235 Network Color Printer Detail of wiring passthru ...
Page 236: ...222 Phaser 1235 Network Color Printer ...
Page 237: ...NOTES ...
Page 238: ...NOTES ...
Page 239: ...NOTES ...
Page 240: ...NOTES ...