Xerox Phaser 7750DXF, Service Manual, Page: 388 / 505

10-64 Phaser 7750 Printer Service Manual
Development Y (As an Example)
9.15
9.9
DISPENSED
YELLOW TONER
9.5
LA
TENT
IMAGE (Y)
9.5
LA
TENT
ADC P
A
TCH (Y)
9.5
LA
TENT REGICON
P
A
TCH (Y)
1
3 3 3 3 3
2
DEVE BIAS (Y
, M)
POWER CONTROL
CAUTION
HIGH
VOL
TAGE
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]
A
TC SENSOR POWER
ON (H) +5VDC
DOUBLE
PLUG
DOUBLE
PLUG
3 1
1 3
J129
A
TC 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 VOL
TAGE
MONITOR
DEVE BIAS (Y
,M)
AC VOL
TAGE MONITOR
J580
DISPENSED
YELLOW TONER
LA
TENT
IMAGE (Y)
LA
TENT
ADC P
A
TCH (Y)
LA
TENT REGICON
P
A
TCH (Y)
DEVE BIAS (Y)
1
DC140 [009-100]
A
TC SENSOR (Y)
SENSED SIGNAL
YEL
J405
B13
MCU PWB PL13.1
A
TC SENSOR (Y)
SENSED SIGNAL
HVPS Control PWB per
forms 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 ever
y color
, Deve Bias
for ever
y color
, Main Motor
, Drum Motors and Deve Motor to operate
simultaneously. When replacing Deve Assy or A
TC Sensor
, use Reference V
alue and Gain
V
alue specified on the label of the new A
TC Sensor for DC921 A
T
C
Sensor Setup. Detects Low T
oner and T
oner Empty by A
TC Sensor
-sensed T
oner
Concentration in Deve Assy and ICDC Control. Virtual Line
NOTES:
7750-300
DEVELOPED
IMAGE (Y)
DEVELOPED
ADC P
A
TCH (Y)
DEVELOPED
REGICON
P
A
TCH (Y)
W
ASTE
TRICLE (Y)