Epson DFX-9000 Service Manual page 123

Epson DFX 9000
Printing-related failure
Some dots are missing, or unnecessary dots are printed.
(NOTE: If the printed characters are uneven on their upper or
lower edges, refer to Page 117.)
The printout is spaced incorrectly.
Troubleshooting
Troubleshooting procedure
Perform the following, checking for functionality after each step.
1. Clean or Replace the CES SCALE
2. Check that the CARRIER CABLE UNIT is correctly connected to the ROM
BOARD and the PRINT HEAD.
3. Replace the CARRIER CABLE UNIT
4. Replace the PRINT HEAD
5. Replace the ROM BOARD
1. Check that the APTC adjustment operates normally, and that the paper thickness
adjustment is properly set.
2. Perform the Bi-D adjustment
3. Clean and lubricate the STAY SHAFT
4. Clean or replace the CES SCALE
5. Check the CR drive belt (SP BELT) tension adjustment
6. Replace the SP BELT (p.158).
7. Replace the SP MOTOR ASY
8. Replace the ROM BOARD
Troubleshooting
(p.159).
(p.189).
(p.152).
(p.137).
(p.250).
(Carrier oil pads (p.267).
(p.159).
(p.220).
(p.156).
(p.137).
Revision B
116