#1: Carriage Hums and Won't Move at Power On
PROBLEM DESCRIPTION: When the printer is powered on, the
carriage should move to the far left and then back to the center of its
travel. With this problem, the carriage doesn't move at all at power
on.
CAUSE: Printer is shipped with plastic tubes on the carriage shaft to
hold the carriage stationary and so prevent damage. It is not easy to
see that these tubes are just shipping fixtures so sometimes they
aren't removed at installation.
CURE: If plastic tube shipping fixtures are installed, remove them
from the carriage shaft.
#2:Carriage Moves to the Right at Power Up
PROBLEM DESCRIPTION: Carriage moves to the right instead of the left at
power up.
CAUSE: The CPU PCB may be defective.
CURE: Replace the CPU PCB with a known good one.
#3:DEAD PRINTER
PROBLEM DESCRIPTION: When you power up the printer the carriage
doesn't move at all.
CAUSE: it could be a defective Driver PCB; it could be a
defective CPU PCB.
CURE: 1. If the LEDs are not lighting, replace the Driver PCB.
2. If the LEDs are lighting, replace the CPU PCB.
#4: AFTER POWER UP CARRIAGE MOVES LEFT BUT DOESN'T CENTER
PROBLEM DESCRIPTION: When the printer is turned on, the Carriage
moves to the left but does not return to the center.
CAUSE: The end of travel switch mounted under the Carriage
Assembly may be bent or malfunctioning.
CURE: Power off the unit. Remove the top cover and slide the
Carriage Assembly to the right. Set the printer on its right side and
locate the switch under the Carriage Assembly. Make sure that it
is not bent. If it isn't, push the switch and check for (a) or (b)
below:
(a) IF THE SWITCH HESITATES TO GO IN AND RETURNS VERY
SLOWLY, then it's probably stuck. Spray contact cleaner on the
switch while you press it a few times. Do this until it operates
freely.
Recheck for the problem.
(b) IF THE SWITCH OPERATES FREELY BUT THE CARRIAGE STILL
WON'T CENTER AT POWER UP, the problem could be the CPU, switch,
Carriage Assembly, ribbon cable, or power supply. Refer to the
Tech Procedures for the troubleshooting procedure to isolate the
problem to one of these modules.
#5:DESCRIPTION
When the printer is turned on, the power light should come on.
YOU WILL NEED:
1. Level I Tech Procedures for ImageWriter II
2. ImageWriter II User's Manual
BEFORE YOU START:
1. If a replacement doesn't fix the problem, reinstall the original
module/part before continuing with the procedure.
2. For location of IW II module/parts, refer to the Level I Tech
Procedures.
INSTRUCTIONS
1. Move the carriage back and forth along its full length of travel.
PROB: The carriage binds or doesn't move consistently.
FIX: Check if carrier belt is installed properly
Check for obstructions in the gears
2. Turn on the IW II. The power lamp should come on and the carriage
should move slowly to its leftmost position, then rapidly to its
center position.
PROB: The power lamp doesn't light when the IW II is turned on
or the carriage does not operate properly.
FIX: Recheck for the problem after each of the following steps:
(1) Check that power is turned on.
(2) Check that the power cord is plugged in.
(3) Replace the operation panel.
(4) Check the 5 amp and 1 amp fuses on the Drive PCB
* If either is burned out, replace it and turn power on again.
* If the fuse blows a second time, replace components in this
order
(recheck for the problem after each replacement):
a. Drive PCB
b. Carrier motor
c. Transformer
(5) If the fuse is OK, swap the power cord.
(6) Replace components in this order (recheck for the problem
after each replacement): transformer, drive PCB, filter
board, 2 amp
fuse on the filter board, power switch.
PROB: There is a burning odor, erratic carrier motion, or
erratic platen rotation when the printer is turned on.
FIX: Recheck for the problem after replacing each of the
following parts:
(1) Drive PCB
(2) Main CPU PCB
(3) Carrier motor
(4) Flexible cable
(5) PCB interconnection cable
(6) Interface cable
If the above cures don't fix the problem, search on GTS and the
product's name to obtain a general troubleshooting procedure.