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1159SBT0303A
3-3. Power Malfunctions
Relevant Electrical Parts
@ AVR (PWB-F)
© Power Supply Unit (PU1)
© MSC Board (PWB-B)
@ Master Board (PWB-A)
® Power Switch (S1)
@ Noise Filter Board (PWB-D)
1159C13TAA
Is the voltage across PJ9A-1, -2, and -5 on PWB-A and
GND DC24V when S1 Is turned ON?
tween PU1 and
PWB-A and, If it is in-
tact, change PU1.
Change PWB-A,
PWB-B, and the
harness, in that order.
Install them properly.
Are PJ20A on PWB-A and PJ1B on PWB-B installed
properly?
T-27
1149SATO6O0A
om
IMAGE FAILURE
1159SBTOSO1A
:
5-1. Image Failure Troubleshooting
ing image failure troubleshooting procedure.
118988"
STOGOZA,
5-2. Initial Checks
1)-Place of installation
@ Is the copier Installed in a hot, humid place or In a place where temperatures vary sharply?
@ Is the copler installed in a dusty place?
@ Is the copier subjected to direct sunlight?
@ Is the copier level?
2) Copy paper
@ Is the recommended paper used?
s»+Load recommended paper and make copies to see if the problem persists.
© Is the paper damp?
wLoad new paper and make copies to see if the problem persists.
3) Original
© Does the original used have a reddish background or Is It written in light pencil?
Use the Test Chart to check the Image.
@ |s the original transparent or are transparencies being used?
=Cover with white paper and make a copy.
@ Are the Original Glass and ADF Transport Belt dirty or scratched?
_ wl dirty, clean with alcohol. If scratchad, replace.
4) PM parts (supplies)
© Have the PM parts (supplies), such as the PC Drum, Cleaning Blade, AIDC Sensor and corona wires,
reached the end of their cleaning/replacement cycles?
5) Adjustment items (registration, focus, AE level, etc.)
@ Among the adjustment items given in DIS/REASSEMBLY, ADJUSTMENT, Is there any adjustment that
may remedy the Image failure?
T-28
4
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