Alignment And Adjustments; How To Use The Diagnostic Control Unit (Dcu); Dcu Setup - Xerox Phaser 3150 Service Manual

6
Alignment and
Adjustments
This chapter describes some of the main service procedures including:
Using the DCU for diagnostics
Clearing paper jam and test patterns
Much of this chapter is also included in the user's guide.

6.1 How to Use the Diagnostic Control Unit (DCU)

6.1.1 DCU Setup

You can use the DCU test unit as an aid to diagnosing printer problems. To connect the DCU to the printer, open the
rear access cover and then connect the DCU harness wire (10 pin/4 pin) to CN2 on the main controller board.
ML SERIES DIAGNOSTIC CONTROL UNIT
04
05
07
08
09
STATUS
10
DIAGNOSTIC
DIAGNOSTIC CODE
00 MAIN MOTOR OPERATING SYSTEM
01 MAIN HIGH-VOLTAGE ON
02 TRNSFER HIGH-VOLTAGE (-)ON
03 THV(+) REFERANCE VOLTAGE
04 DEV/SUPPLY HIGH-VOLTAGE ON/PTL ON
05 LSU OPERATING SYSTEM
06 PICKUP CLUTCH ON
07 PEEMPTY/PWITH/NEW CRU TEST
08 FEED & EXIT SENSOR TEST
09 COVER OPEN SENSOR TEST
10 FUSER TEST
11 HOT BURN TEST
12 CLEAN MODE PRINT
13 THV(+)TRIGGER, ALL HV & FAN ON
14 THV(+) REFERENCE ON
DIAGNOSTIC DOWN
MODE
UP
TO ENTER DIAGNOSTIC MODE, PUSH THREE BUTTONS SIMUL ANEOUSL
AND TURN THE PRINTER POWER ON.
DEV 300 DEV 350 DEV 350
LSU READY LSU MT & LD LSU MOTOR
PAPER EMPTY PAPER WIDTH NEW CRU
SELF
EXIT SENSOR FEED SENSOR
TEST
COVER OPEN
COER HEATING PRINTING TEMP READY HEAT
ON OFF
NORMAL STATUS CODE
61 WARM UP
00 READY (REGAL)
01 READY (LETTER)
02 READY (A4)
READY (EXECUTIVE)
03
04 READY (B5)
PRINT START
20
30 FEED SENSOR ON
40 FEED SENSOR OFF
PAPER OUT
50
SLEEP MODE
69
ERROR STATUS CODE
OPEN FUSER ERROR
60
62 LOW TEMPERATURE ERROR
OVER HEATING ERROR
68
COVER OPEN ERROR
64
70 NO PAPERR
PAPER JAM 0
71
PAPER JAM 1
72
PAPER JAM 2
73
95 LSU NOT READY
SHIFT STOP
ENTER
SEC CODE : ML+5000 KC/XRX

Alignment and Adjustments

Service Manual 6-1