Toner Sensor Failure - Oki B6100 Technical Manual

Step
1
INITIAL ANALYSIS
Inspect the following components.
• Toner Sensor (PL5.1.1)
• Holder Toner Sensor (PL5.1.2)
• Cushion TSN (PL5.1.33)
• PWBA HKB26 MCU (PL10.1.13)
• PWBA HKB PS (PL10.1.17)
• Harness Assy Toner Sensor (J42-J421) (PL5.1.32)
Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
2
TONER SENSOR (PL5.1.1) ANALYSIS
Disconnect P/J42 from the PWBA Conn (PL10.1.11).
Check the voltage between P42-3 and P42-1.
Is there +24VDC between P42-3 and P42-1?
3
TONER SENSOR ACTUATING SIGNAL ANALYSIS
Disconnect P/J42 from the PWBA Conn (PL10.1.11).
Check the voltage between P42-4 and frame ground.
Is there +3.3VDC between P42-4 and frame ground?
4
HARNESS ASSY TONER SENSOR (J42-J421) (PL5.1.32)
ANALYSIS
Is there continuity (0Ω) between all wires on J42 and
J421?
5
PWBA CONN (PL10.1.11) ANALYSIS
Check the continuity between P42-4 and P231-9, P42-3 and
P231-11, and P42-1 and P231-12.
Is there continuity (0Ω)?
OKI B6100 Laser Printer - Base Engine Technical Manual
Version 1.0
Actions and Questions
Secondary FIPs

6.17 Toner Sensor Failure

Yes No
Go to step 2 Replace the
problem com-
ponents
Go to step 3 Go to 6.2
PWBA HKB
PS Failure
(+24VDC)
Go to step 6 Go to step 4
Go to Step 5 Replace the
Harness Assy
Toner Sensor
Go to 6.2 Replace the
PWBA HKB PWBA Conn
PS Failure (RRP10.1.5)
(+24VDC)
6-25