Epson AcuLaser C1100 Service Manual page 175

EPSON AcuLaser C1100
Step Check
Continuity check of HARNESS-ASSY P/H1
11
Disconnect the P/J408 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J408-3 ↔ J603-10
J408-4 ↔ J603-9
Continuity check of HARNESS-ASSY P/H2
12
Disconnect P/J603.
Do all of the wiring below have normal
continuity?
P603-3 ↔ P203-2
P603-4 ↔ P203-1
Check of resistance value of CLUTCH
13
ASSY REGI
Disconnect P/J203.
Is the winding resistance between the
terminals of CLUTCH ASSY REGI is 144Ω ±
10% (20°C)?
Check of 24 VDC power supply to
14
MOTOR-PH
The voltage of P409-6 ↔ P409-5 on PWBA
MCU is 24 VDC?
Continuity check HARNESS-ASSY P/H1
15
Disconnect the P/J409 from PWBA MCU.
Do all of the wiring below have normal
continuity?
Is the continuity normal between all terminals
of J409 ↔ P604?
Check after replacement of MOTOR-PH
16
Replace MOTOR-PH.
Does the error recur when the power is turned
ON?
TROUBLESHOOTING
Yes No
Go to Step [12]. Replace
HARNESS-
ASSY P/H1.
Go to Step [13]. Replace
HARNESS-
ASSY P/H2.
Go to Step [36]. Replace
CLUTCH
ASSY REGI.
(p.329)
Go to Step [15]. Go to Step [36].
Go to Step [16]. Replace
HARNESS-
ASSY P/H1.
Replace PWBA End of
MCU. (p.404) procedure
FIP according to the printer message
Step Check
Shape and operation check of 2ND BTR ASSY
17
Remove 2ND BTR ASSY. (p.348)
Is 2ND BTR ASSY damaged?
Are SHAFT-CENT 2ND, FRAME ASSY
BTR and BEARING-BRUSH CAM
damaged? Does any of them operate
abnormally?
Check after replacement of
18
Photoconductor Unit
Replace Photoconductor Unit.
Does the error recur when a test print is made?
Operation check of SENSOR FUSER IN
19
The voltage of P418-2 ↔ P418-1 on PWBA
MCU is 5 VDC when white paper is brought
to the sensor sensing area, and is
0 VDC when paper is removed?
5 VDC power supply check to SENSOR
20
FUSER IN
The voltage of P418-3 ↔ P418-1 on PWBA
MCU is 5 VDC?
Continuity check of HARNESS ASSY ADC
21
Disconnect P/J418 and P/J620 from PWBA
MCU.
Do all of the wiring below have normal
continuity?
J418-1 ↔ J620-3
J418-2 ↔ J620-2
J418-3 ↔ J620-1
Revision B
Yes No
Replace 2ND Go to Step [18].
BTR ASSY and
other relevant
parts.
Go to Step [19]. End of
procedure
Go to Step [23]. Go to Step [20].
Go to Step [21]. Go to Step [39].
Go to Step [22]. Replace
HARNESS
ASSY ADC.
175