General Troubleshooting
G176/G177/G176L 4-30
SM
4.3.5 MISCELLANEOUS PROBLEMS
Here is a summary of some problems, what causes them, and how they can be solved.
Problem
Probable Cause/Solution
Black spots at approximately 94
mm intervals.
AIO is defective, transfer roller is dirty.
Replace
AIO
Clean the transfer roller
Spurious noise during printing
Relay clutch defective.
Replace relay clutch
Vertical positioning of printed
image is not consistent (sub scan
direction)
Registration clutch defective
Replace registration clutch
Multiple vertical stripes appear in
areas of black coverage
NIC defective
Replace
NIC
Entire page appears gray, text
appears light and enlarged
Synchronization defective.
Replace main (engine) board
Frequent paper jams, or message
prompts to load correct paper size
and type.
Registration sensor defective, registration sensor
actuator defective. (High usage can foul the actuator
with paper dust.)
Replace registration sensor
Replace
registration
sensor actuator
HDD unit not recognized
The HDD unit of another machine cannot be used.
Replace the HDD unit with the new HDD.
Summary of Contents for G176
Page 1: ...G176 G177 G176L SERVICE MANUAL 003037MIU...
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Page 25: ...INSTALLATION SECTION 1 INSTALLATION REVISION HISTORY Page Date Added Updated New None...
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Page 52: ...Laser Unit G176 G177 G176L 3 12 SM...
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Page 201: ...DETAILS SECTION 6 DETAILED DESCRIPTIONS REVISION HISTORY Page Date Added Updated New None...
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Page 237: ...SPECIFICATIONS SECTION 7 SPECIFICATIONS REVISION HISTORY Page Date Added Updated New None...
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Page 286: ...Paper Size Switch G894 G362 6 SM 1 6 PAPER SIZE SWITCH A Paper size switch Hook x1 x1...