Epson AcuLaser CX11 Service Manual page 187

EPSON AcuLaser CX11/CX11F
Step Check
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 ASSY
13
REGI
Disconnect P/J203.
The winding resistance between the terminals
of CLUTCH ASSY REGI is 144Ω ± 10%
(20°C)?
Check of 24 VDC power supply to MOTOR-
14
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?
Shape and operation check of 2ND BTR
17
ASSY
Remove 2ND BTR ASSY. (p.374)
Is 2ND BTR ASSY damaged?
Are the SHAFT-CENT 2ND, FRAME ASSY
BTR and BEARING-BRUSH CAM damaged?
Does any of them operate abnormally?
Check after replacement of Photoconductor
18
Unit
Replace Photoconductor Unit.
Does the error recur when a test print is made?
TROUBLESHOOTING
Yes No
Go to Step [13]. Replace
HARNESS-
ASSY P/H2.
Go to Step [36]. Replace
CLUTCH ASSY
REGI. (p.354)
Go to Step [15]. Go to Step [36].
Go to Step [16]. Replace
HARNESS-
ASSY P/H1.
Replace PWBA End of procedure
MCU. (p.432)
Replace 2ND Go to Step [18].
BTR ASSY and
other relevant
parts.
Go to Step [19]. End of procedure
Printer
Step Check
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
Continuity check of HARNESS ASSY 2BTR
22
SENS
Disconnect P/J620 from HARNESS ASSY
2BTR SENS.
Do all of the wiring below have normal
continuity?
P620-1 ↔ J111-3
P620-2 ↔ J111-2
P620-3 ↔ J111-1
Shape and operation check of CAM ASSY-
23
2ND
Does CAM ASSY-2ND move smoothly
without any damage, and does it enter the
sensor sensing area?
Revision B
Yes No
Go to Step [23]. Go to Step [20].
Go to Step [21]. Go to Step [39].
Go to Step [22]. Replace
HARNESS
ASSY ADC.
Replace Replace
SENSOR HARNESS
FUSER IN. ASSY 2BTR
(p.369) SENS.
Go to Step [24]. Replace CAM
ASSY-2ND.
(p.376)
189