2KN/2KP
1-6-2
1-6-2 Adjustment-free variable resistors (VR)
The variable resistors listed below are set at the factory prior to shipping and cannot be adjusted in the field.
• Inverter PWB: VR1
1-6-3 Remarks on main PWB replacement
Follow the procedure below to replace the main PWB.
Caution
When replacing the main PWB, run maintenance items U026 and U027. If replacing the PWB without running these items,
faulty images may occur.
Procedure
1. Run maintenance item U000 to output a sta-
tus report (see page 1-3-7).
2. Run maintenance item U026 (Evacuation of
the backup data), and record the displayed
checksum (see page 1-3-12).
3. Replace the main PWB.
* When refitting the main PWB, remove the
EEPROM from the main PWB that has been
removed and then reattach it to the new
main PWB.
Figure 1-6-3
4. Run maintenance item U027 (Return of the
backup data) (see page 1-3-12). Check that
the displayed checksum is the same as the
result of U026 that has been run in step 2.
5. Run maintenance item U000 to output the
status report and check that the current set-
ting is the same as the setting before
replacement of the main PWB (see page 1-
3-7).
EEPROM
Main PWB
Socket
Summary of Contents for TASKalfa 620
Page 1: ...SERVICE MANUAL Published in August 2009 842KP112 2KPSM062 Rev 2 TASKalfa 620 820 ...
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Page 144: ...2KN 2KP 1 3 106 This page is intentionally left blank ...
Page 308: ...2KN 2KP 1 5 88 This page is intentionally left blank ...
Page 412: ...2KN 2KP 2 3 60 This page is intentionally left blank ...
Page 435: ...1 1 INSTALLATION GUIDE INSTALLATION GUIDE FOR SIDE FEEDER ...
Page 442: ...INSTALLATION GUIDE FOR LARGE SIZE SIDE FEEDER ...
Page 460: ...INSTALLATION GUIDE FOR DOCUMENT FINISHER ...
Page 475: ...INSTALLATION GUIDE FOR CENTERFOLD UNIT ...
Page 490: ...INSTALLATION GUIDE FOR MULTI JOB TRAY ...
Page 501: ...INSTALLATION GUIDE FOR PUNCH UNIT ...
Page 512: ...INSTALLATION GUIDE FOR STOPPER GUIDE ...
Page 515: ...INSTALLATION GUIDE FOR PRINTING SYSTEM ...
Page 518: ...INSTALLATION GUIDE FOR SCAN SYSTEM ...
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