Sharp AM-900 Service Manual page 19

3.2. MC Voltage Check Point
D3
VR1
CN3
C1
J5
R1
D8
D10
CN1
D1
D58
J1
J2
Q52
QJ005
B51
CAUTION - HIGH VOLTAGE
The unit's back cover should never be opened by anyone other than
a qualified serviceperson. There are many high voltage parts inside
the unit, and touching them is dangerous.
1) MC Voltage
Voltage(v)
Q3
B1
D4
QJ071
J6
D2
J3
C5
D9
VR51
C9
D53
D61
R15
D62
D60
Q38
J4
D52
D31
C56
D54
VR31
C65
C31
300Hz
GND (-)
C6
CN4
R93
D5
J52
J51
C7
D7
J12
J11
R16
MC Voltage Check Point (-)
J22
J21
R67
(There is danger of an electric shock!)
Use Measuring instrument:
J42
J41
Input Resistance : more than 100 MΩ
Maximum Voltage : more than 2 kV
J32
VOLTAGE
J31
MC : - 950 V ± 20 V (PRINTING)
MC : - 850 V ± 20 V (CLEANING)
2 – 3
AM-900U
Time(s)
Type Tolerance
-570V ± 67V
-950V ± 20V
-1330V ± 67V