Code 45 Nvram Tune Up; Code 45-1 Lp Tune Up - Ricoh G157 Service Manual

SERVICE MODE MENU

Code 45 NVRAM TUNE UP

This mode is not used during normal operation, but is used when fine adjustment is
required. This mode consists of five sub-modes.
NVRAM TUNE UP
45-1
45-2
45
45-3
45-4
45-5

Code 45-1 LP TUNE UP

This mode can be used when image density, line thickness and/or color
reproduction must be adjusted. The adjustment changes the laser power against
the reference value 0 (zero) in the range between -7 and +7.
1. Use the "Scroll" key and "Select" key to select "NVM
TUNE UP/NVR" in "FACTORY MODE". Then, select
"LP TUNE UP" in "NVM TUNE UP/NVR".
2. Press the "Select" key after selecting "LP TUNE UP"
(no.1).
3. Press the "Select" key after selecting the color to be
adjusted.
4. Press the "Select" key after selecting a number.
NOTE: The value can be adjusted within 14 steps
between -7 and +7.
5. Press the "Clear" key to return to the "LP TUNE UP"
mode.
6. Press the "Clear" key one more time to return to the
"NVM TUNE UP" mode.
7. Press the "Clear" key one more time to return to
"FACTORY MODE".
G157
LP TUNE UP: Laser Power
THV TUNE UP: Transfer Voltage
DBV TUNE UP: Developer Bias Voltage
CBV TUNE UP: OPC belt voltage
FBV TUNE UP: Drum cleaner voltage
5-12
39 FACTORY MODE
NVM TUNE UP/NVR
45 LP TUNE UP
23456789ABCDEFG
45 LP TUNE UP 0
Y /M /C /K
45 YELLOW
– < 7654321 1 > +
45 LP TUNE UP 0
Y /M /C /K
45 LP TUNE UP
23456789ABCDEFG
39 FACTORY MODE
MARGIN ADJUST/L
0
SM