Toshiba DP120F Service Manual page 676

4.3.7 "CONFIRM DEV. UNIT"
Step
1 Are the terminals contacting between the
LSU and top of the Drum unit (discharge
lamp contacts.)
2 Is the cable firmly connected to the Mother
PBA (CN12), between the Mother PBA
(CN24) and the Main PBA (CN12)?
3 When no problem is found in steps above,
the Drum unit itself or Main PBA be de-
fective.
4.3.8 "DEVICE ERROR 21"
Step
1 Are the terminals contacting between the
LSU and top of the Drum unit dirty or de-
formed.
2 Is the cable firmly connected to the Mother
PBA (CN12), between the Mother PBA
(CN24) and the Main PBA (CN12)?
3
When no problem is found in steps above,
the Drum unit itself, the Main PBA or the
Mother PBA may be defective.
4.3.9 "DEVICE ERROR 22 to 25"
Step
1 Is the cable from the Fuser firmly con-
nected to the LVPS (CN3), between the
Mother PBA (CN24) and the Main PBA
(CN12)?
2 Is the cable from the Fuser firmly con-
nected to the Mother PBA (CN4), between
the Mother PBA (CN25) and the Main PBA
(CN13)?
3
When no problem is found in the steps
above, the Fuser itself, the LVPS, or the
PBA's may be defective.
DP120F/DP125F Troubleshooting
Check points
Check points
Check points
If dirty, clean them. If deformed, replace
the LSU.
Insert the cable to the connector firmly.
Replace in the order of: Drum unit, Main
PBA, Mother PBA.
If dirty, clean them. If deformed, replace
the LSU.
Insert the cable to the connector firmly.
Replace in the order of: Drum unit, Main
PBA, Mother PBA.
Insert the cable firmly.
Insert the cable firmly.
Replace in the order of: Fuser, LVPS, Main
PBA, Mother PBA.
11-64
Solutions
Solutions
Solutions
March 2000 © TOSHIBA TEC