10-64 Phaser 7750 Printer Service Manual
Development Y (As an Example)
9.15
9.9
DISPENSED
YELLOW TONER
9.5
LATENT
IMAGE (Y)
9.5
LATENT
ADC PATCH (Y)
9.5
LATENT REGICON
PATCH (Y)
1
3
3
3
3
3
2
DEVE BIAS
(Y, M)
POWER
CONTROL
CAUTION
HIGH
VOLTAGE
5
6
1
2
3
4
5
6
9.20
9.20
9.20
9.29
9.31
9.10 DEVELOPMENT (Y)
DEVE (Y) DRIVE
HVPS CONTROL PWB
PL9.1
I/F PWB
PL9.1
DC COM
DC COM
DC COM
DC COM
+24VDC
INTLK
+24VDC
INTLK
+24VDC INTLK
+24VDC INTLK
MCU PWB
PL13.1
DC COM
+5VDC
4
3
2
1
J553
VIO
VIO
ORN
ORN
J501
HVPS T5
PL9.1
P/J571
24
25
26
27
28
18
20
19
10
11
12
13
P/J570
15,16,1
7
B12
B14
J405
YEL
YEL
DC COM
P129
DC330 [009-080]
ATC SENSOR POWER
ON (H) +5VDC
DOUBLE
PLUG
DOUBLE
PLUG
3
1
1
3
J129
ATC SENSOR (Y)
PL6.2
4
J129
P129
YEL
22
DC140 [009-026]
DEVE BIAS (Y,M)
AC REMOTE 1
DC140 [009-026]
DEVE BIAS (Y,M)
AC REMOTE 2
DC140 [009-026]
DEVE BIAS (Y)
DC REMOTE
DC140 [009-026]
AC BIAS REMOTE 2
DC140 [009-026]
AC BIAS REMOTE 1
ANALOG GND
+5VDC REF
AC BIAS VOLTAGE
MONITOR
DEVE BIAS (Y,M)
AC VOLTAGE MONITOR
J580
DISPENSED
YELLOW TONER
LATENT
IMAGE (Y)
LATENT
ADC PATCH (Y)
LATENT REGICON
PATCH (Y)
DEVE BIAS (Y)
1
DC140 [009-100]
ATC SENSOR (Y)
SENSED SIGNAL
YEL
J405
B13
MCU PWB
PL13.1
ATC SENSOR (Y)
SENSED SIGNAL
HVPS Control PWB performs Deve Bias 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
AC Bias Remote 1 and AC Bias Remote 2 are remote signals for the
converter that generates the DC element.
Turning on DC140 [009-026] allows BCR for every color, Deve Bias
for every color, Main Motor, Drum Motors and Deve Motor to operate
simultaneously.
When replacing Deve Assy or ATC Sensor, use Reference Value and Gain
Value specified on the label of the new ATC Sensor for DC921 ATC
Sensor Setup.
Detects Low Toner and Toner Empty by ATC Sensor-sensed Toner
Concentration in Deve Assy and ICDC Control.
Virtual Line
NOTES:
7750-300
DEVELOPED
IMAGE (Y)
DEVELOPED
ADC PATCH (Y)
DEVELOPED
REGICON
PATCH (Y)
WASTE
TRICLE (Y)
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