Diagnostic Mode; U6:Nvm Fail - Oki B6100 Technical Manual

There is a problem with NVRAM.
Step
1
INITIAL ANALYSIS
Inspect the following component.
• PWBA HKB26 MCU (PL10.1.13)
Is it compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
2
Does U6 appear after you switch ON Main Power?
3
Switch Main Power OFF and ON several times.
Does U6 still appear when you switch ON Main Power
again?
4
PWBA HKB26 MCU (PL10.1.13) ANALYSIS
Enter DIAGNOSTIC MODE MENU.
Can you enter DIAGNOSTIC MODE MENU?
5
NVRAM ANALYSIS
Enter ADJUSTMENT MODE MENU and check the parameters
for each value of NVRAM Code.
Are all parameters set correctly?
6
PWBA HKB26 MCU (PL10.1.13) ANALYSIS
1. Enter correct parameters.
2. Switch OFF Main Power.
3. Switch ON Main Power.
Does U6 still appear?
OKI B6100 Laser Printer - Base Engine Technical Manual
Version 1.0
Actions and Questions
Primary FIPs:Error Codes

3.5 U6:NVM FAIL

Yes No
Go to step 2. Replace the
problem com-
ponent.
Go to step 5. Problem cor-
rected.
Go to step 4. Problem
solved.
Go to step 5. Replace the
PWBA HKB26
MCU
(RRP10.1.7).
(If U6 contin-
ues, go to
6.20 Electri-
cal Noise).
Replace the Go to step 6.
PWBA HKB26
MCU
(RRP10.1.7).
Replace the Problem
PWBA HKB26 solved.
MCU Return to Ser-
(RRP10.1.7). vice Flow-
chart.
3-13