Service manual

FIXING UNIT
2-O-5
2 UNIT EXPLANATION
[3] M16 (Web Drive) Control
M16 (web drive) is controlled directly by PRCB (printer
control board). Related signals are PS2 (fixing exit)
and PS3 (fixing jam).
1. Operation
When PS2 is turned ON by passage of paper, the
PRCB controls M16 according to the value of the
cleaning web counter. The cleaning web counter
value is incremented together with the total
counter in the ejection section of the main body.
The relationship between the cleaning web
counter values and M16 control is as follows:
2. Signals
a. Input signals
(1) PS2 (PS2 to PRCB)
Detection of passage of paper at fixing unit exit.
[L]: Paper exists
[H]:Paper does not exist
(2) PS3 (PS3 to PRCB)
Fixing jam detection signal.
[L]: Paper exists. (Jam is detected.)
[H]:Paper does not exist. (Jam is not detected.)
b. Output signal
(1) M16 DRIVE 1, 2 (PRCB to M16)
M16 drive control signal.
Cleaning web
counter value
M16 control
1 to 10,000 Driven for 800 ms per copy
10,001 to 20,000 Driven for 500 ms per copy
20,001 to 40,000 Driven for 450 ms per copy
40,001 to 50,000 Driven for 700 ms per 2 copies
50,001 to 200,000 Driven for 500 ms per 2 copies
200,001 to 300,000 Driven for 390 ms per 2 copies
300,001 or more Driven for 340 ms per 2 copies
500,001 or more Driven for 300 ms per 2 copies
PRCB
DCPS1
DCPS2
PS2
PS3
5VDC
PS2
SGND
5VDC
SGND
PS3
24VDC
PGND
M16
M16 DRIVE A
M16 DRIVE A
M16 DRIVE B
M16 DRIVE B
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