Brother HL-3450CN Service Manual page 172

3.4.5 Initial setting of engine NVRAM
Implement the initial setting at the replacement of MCTL PWB after clearing the contents of
NVRAM.
<Purpose>
The number of images for each color will be reset when changing the MCTL PWB or
executing NVRAM INITIAL.
<Procedures of Setting>
(1) Before replacing the MCTL PWB, confirm the contents of the NVRAM for the
following items.
"Factory Mode"
Code
43 MARGIN ADJUST
43 MARGIN ADJUST
45 LP TUNE UP
45 THV TUNE UP
45 DBV TUNE UP
45 CBV TUNE UP
45 FBV TUNE UP
45 ADC TUNE UP
47 TOTAL PAGE SET
47 LFU PAGE SET
47 DPL PAGE SET
48 EACH IMAGE SET
49 NEXT LIFE SET
(2) Execute 46 NVRAM INITIAL in Factory Mode.
(3) After implementing the NVRAM INITIAL, input the values obtained in procedure
1) into the NVRAM to complete the settings.
*1 '0' is applied for machines produced after June 2000. You need to set the CBV TUNE UP
value to '0' for machines which were produced before June 2000, to which '+1' has been
applied. For setting procedures, see 45-4. CBV TUNE UP in this section.
*2 '+1' is applied for machines produced after June 2000. You need to set the FBV TUNE
UP value to '+1' for machines which were produced before June, 2000, to which '0' has been
applied. For setting procedures, see 45-5. FBV TUNE UP in this section.
Subject
Top margin set value
Left margin set value
Adjustment value ("+4" in ordinary case)
Adjustment value (PPC/OHP "0", LABEL "-2")
Adjustment value ("0" in ordinary case)
Adjustment value ("0" in ordinary case) *1
Adjustment value ("+1" in ordinary case) *2
Adjustment value ("0" in ordinary case)
Total print count
Print count from LFU
Print count from Duplex
Formed image count for 4 individual colors
Print count for maintenance replacement parts
5-47
HL-3450CN SERVICE MANUAL
Confirmation Value