YOU WILL NEED:
1. Level I Tech Procedures for ImageWriter II
2. ImageWriter II User's Manual
3. Digital Multi-meter
4. Color ribbon for the ImageWriter II
BEFORE YOU START:
1. If a replacement module/part 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.
3. The other functions on the printer must be working before this
procedure can be performed. To check out the other functions, try
printing a file from the IIe.
INSTRUCTIONS
1. Press the FORM FEED switch on the IW II as you turn on the printer. The
printer should print:
SELF TEST
ROMREV
DIP switch settings
RAM XX AT On or OFF
and then begin printing lines of CHARACTER SETS in alternating colors.
If the printout shows color select problems, continue with this procedure
below.
2. Examine the color ribbon assembly (printer should be off). Verify that
the black tabs on the ribbon plate are riding on the spiral ridge of the
ribbon cam. Check the ribbon cam for looseness. Also check the copper
tab mounted behind and below the ribbon cam. When the cam is all the way
up, the vertical ridge on the cam should hit the tab. If the color ribbon
assembly is loose, the ribbon cam position is misaligned. For color
printing adjustment procedures turn to Section 4, Adjustments, in the Tech
Procedures. For more location info, see the illustrated parts diagrams in
the Tech Procedures.
3. Replace the Drive PCB.
4. Turn off the printer and check the flexible cable and the ribbon motor as
follows. If the check shows a problem, replace the flexible cable first
and retry the check. If the problem remains, replace the ribbon motor.
NOTE: If part location information is needed, refer to the illustated
parts list in the Tech Procedures.
4.1 Detach the flexible cable from the drive PCB.
4.2 Set the digital multimeter to measure 200 ohms resistance.
4.3 On the flexible cable, check the resistance values between pins 3 and
7, 5 and 7, 4 and 8, and 6 and 8. The value for each reading should
be approximately 120 ohms.
4.4 Check the resistance values between pins 3 and 5, and 4 and 6.
The value for each reading should be approximately 240 ohms.
5. Replace the Main CPU PCB
6. Reset the DIP switches to the customer's original configuration. Then
refer to the User's Manual and the Appendix in the Imagewriter II section
of the Tech Procedures to see if the customer's DIP switch configuration
caused the problem.