Circuit Board; Base Engine Control Unit (Bcu); Before You Replace The Bcu; Replacement Procedure - Ricoh G157 Service Manual

3.13 CIRCUIT BOARD

3.13.1 BASE ENGINE CONTROL UNIT (BCU)

Before you Replace the BCU

The engine setting data is cleared after you replace the BCU or initialize the
NVRAM on the BCU. Also, you cannot move the memory chip from the old BCU to
the new one.
Because of this, note the following settings before you replace the BCU or initialize
the NVRAM if possible, and then set the initial settings after replacing or initializing.
For details of these service modes, refer to "SERVICE MODE FUNCTIONS" (
5.1.2)
Code No. Mode Name
43 MARGIN ADJUST
45 LP TUNE UP
THV TUNE UP
DBV TUNE UP
CBV TUNE UP
FBV TUNE UP
47 TOTAL PAGE SET
DPL PAGE SET
48 EACH IMAGE SET
49 NEXT LIFE SET
50 ID DATA SET

Replacement Procedure

1. Top cover ( 3.1.1)
2. Left front cover and Left rear
cover ( 3.1.3)
3. BCU cover [A] (
4. BCU [B] (Flat cable x 1,
All 's, x 5)

After you Replace the BCU

1. Start "SERVICE MODE".
2. Execute the service modes
above.
3. Input the values that you noted
previously for each of the above
service modes.
SM
CÓPIA NÃO CONTROLADA
Top Margin Set Value
Left Margin Set Value
Adjustment Value ("0" in ordinary cases)
Adjustment Value
SIMPLEX (PPC/OHP/ENV/MTS/TS1/TS2) "0"
DUPLEX (PPC/MTS/TS1/TS2) "0"
Adjustment Value ("0" in ordinary cases)
Adjustment Value ("0" in ordinary cases)
Adjustment Value ("0" in ordinary cases)
Total Print Count
Print Count from Duplex
Formed Image Count of 4 Colors
Print Count for Maintenance
Replacement Parts
Engine Serial Number to be inputted.
x 3)
[B]
3-33
CÓPIA NÃO CONTROLADA
CIRCUIT BOARD
Confirmation Value
[A]
G157R934.WMF
G157