Power Connector Pinout - Xerox 2135DX - Phaser Color Laser Printer Service Manual

3. Power supply fans: With the power switch on, are the front and rear power
supply fans running? (Access the fans by removing the front and rear
covers.) If not, check the fans' wiring harnesses (CN2 and CN5) to the
low-voltage power supply board; each fan's voltage should measure 32 to
38VDC (the voltage drops to zero when you disconnect a fan). If the
voltage is not correct, replace the low-voltage power supply. Otherwise,
replace the non-functioning power supply fan.
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 rear cover and
rear 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.

POWER connector pinout

Pin Voltage/Signal Level
1 +12 VDC
2 No connection
3 Ground
4 Ground
5 Ground
6 Ground
7 +32 VDC
8 +32 VDC
9 +32 VDC
10 +32 VDC
11 +5 VDC
12 +5 VDC
13 +5 VDC
14 +5 VDC
15 +3.3 VDC
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 34.
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 34.
Pin Voltage/Signal Level
16 +3.3 VDC
17 +3.3 VDC
18 +3.3 VDC
19 No connection
20 Signal
21 Signal
22 Signal
23 Signal
24 Signal
25 Ground
26 Ground
27 Ground
28 Ground
29 Signal
30 Signal
Service Guide 33