MUTOH Rockhopper 38, Maintenance Manual

Page: 230 / 258

Rockhopper 38 – Maintenance Manual
230
AP-74038, Rev. 1.1, 25/01/05
No Message N° Checkpoint Action
1.1 • Are the fans working normally
according to the self-diagnostic
“Examination/Fans”?
→ Check the connectors
between fan assy, fan cable
assy and main board assy.
Fan cable A assy is J115
(FAN1) on the main board
Fan cable B assy is J116
(FAN2) on the main board
Fan cable C assy is J117
(FAN3) on the main board
→ Replace fan assy
→ Replace Fan cable A assy,
Fan cable B assy, Fan cable C
assy.
1.2 • Are the front paper guide and
platen securely screwed?
→ Tighten it.
1.3 • Is the shielding material
securely attached in the proper
positions?
Shield material GA-A, shield GA-
B, shield GA-C
→ Re-attach in the proper
positions.
1.4 • Is the X drive pulley set screw
loose?
→ Tighten it securely.
1.5 • Is the X speed reduction pulley
set screw loose?
→ Tighten it securely.
1.6 • Is the X speed reduction belt
tension adjusted to the prescribed
value (4.2 kg +-0.2 kg)
→ Readjust it.
1.7 • If the media in question is roll
paper, does the scroller turn
freely?
→ Adjust the position of the
scroller bearing so that it turns
freely.
1.8 • Are all the pressure rollers (15)
pressurizing the media?
• With the pressure lever raised,
do any pressure rollers seem
reluctant to turn?
• With the pressure lever lowered,
are any of the pressure rollers
idling.
• With the pressure lever lowered,
is the plate pressing strongly on
the media?
→ If there is paper dust or
scraps near the pressure rollers,
wipe with a soft damp cloth.
(Refer to CON5010)
→ If necessary, replace
pressure assy, pressure rollers
and plate.
→ If the gap between platen and
plate is less than 0.8 mm, adjust
platen height.
1 • Inaccurate straight line in
the direction of head
movement (straightness)
1.9 • Is the rough surface of the grid
roller worn in some places?
• Is the grid roller heavy to turn?
Or does it not turn smoothly?
→ If there is paper dust or
scraps sticking to the grid roller,
clean it with a nylon brush.
(Refer to CON5010)
→ If necessary, replace the grid
roller assy and coupling assy