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PAGE 28 of 30
16.3
C1651 Clock Module PCB Features
Figure 14 llustrates the PCB features referred to elsewhere in the documentation
Figure 14
– C1651 Clock Module PCB
16.4
Clock Module Error Messages
16.4.1 WP DIL switch Error Message:
WP DIL switch operated when timer is not in Timer
Set Mode, Normal Time Display flashes with WP
DIL switch message:
HH:MM:SS
D/N ON
or
HH:MM:SS
D/N OFF
Changes to (pulses every second):
WP DILSW
IS ON
The backlight remains OFF. The panel indicates a
general fault and prevents the clock module from
being accessed by the user/engineer.
16.4.2 EEPROM Error Message:
Data inconsistency detected in EEPROM0 or
EEPROM1:
EEPROM 0
ERROR
or
EEPROM 1
ERROR
Note: Both EEPROMs can be erased by the
following procedure:
1. Power the panel down
2. Place the WP DIL switch in the ON position
3. Power the panel back up.
4. Return the WP DIL switch to the OFF position
when the display is as described in 16.4.1
above.
16.4.3 ROM Checksum Error Message:
Internal ROM Checksum failed:
ROM FAIL
ERROR
DIL switch S1 -
Select config mode,
reset/disable counter
LK1 - Select
operating mode
