10-62 Phaser 7750 Printer Service Manual
Charge and Exposure (Y as an Example)
9.1
9.26
6.5B
6.5B
6.5B
9.26
9.10
9.10
9.10
DRUM (Y) DRIVE
CLEANED
DRUM (Y)
LASER SCANNED
IMAGE (Y)
LASER SCANNED
ADC PATCH (Y)
LASER SCANNED
REGICON PATCH (Y)
I/F PWB
PL9.1
DC COM
+24VDC
INTLK
4
3
2
1
J553
DC COM
DC COM
DC COM
DC COM
J501
VIO VIO
BLU
VIO
ORN
ORN
+24VDC INTLK
+24VDC INTLK
+24VDC
INTLK
+24VDC INTLK
10 10
11
11
12
13
1
4
4
1
2
2
3
HVPS CONTROL
PWB PL9.1
HVPS T5
PL9.1
P/J571
9
2
1
1
8
9
J572
DC330 [009-039]
BCR CLOCK
J573
YEL
YEL
YEL
DC140 [009-026]
BCR (Y) AC REMOTE
DC140 [009-026]
BCR (Y) AC REMOTE
HVPS T7
PL9.1
AC FREQUENCY
AND DUTY
CONTROL
BCR (Y)
POWER
CONTROL
CAUTION
HIGH
VOLTAGE
1
8
8
9
10
11
J581
BCR (Y) POWER
ZONE
D4
CLEANER (Y)
DRIVE
LATENT IMAGE (Y)
LATENT
ADC PATCH (Y)
LATENT REGICON
PATCH (Y)
9.5 CHARGING AND EXPOSURE (Y)
ZONE
H2
BCR (Y) POWER
HVPS Control PWB performs BCR on/off control and remote control by
conducting serial communications with MCU PWB.
For the wiring between MCU PWB and HVPS Control PWB, see CH 3.1B
Users DC and AC, superimposing them on each other in Full Color mode,
and DC in B/W mode for charge.
With wear of it, the charging capability of Drum P/R varies. The DC element
with which BCR is charged ia corrected according to value read by Enviroment
Sensor and Drum Cycle Qty in each of full Color and B/W mode, which qty is
read from Drum Crum.
Turning on DC140 [009-026] enables BCR for every color, Deve Bias for every
color, Main Motor, Drum Motors and Deve Motor to operate simultaneously.
3
4
7750-295
NOTES:
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