Sharp FO IS125N - B/W Laser - All-in-One Service Manual page 17

3.3. TC Voltage Check Point
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) TC Voltage
Voltage(v)
300Hz
2 – 4
GND (-)
(J3 or Chassis Frame)
TC Voltage Check Point (+)
(There is danger of an electric shock!)
Use High Voltage Tester:
Requirement of Measuring instrument:
Input Resistance : more than 100 MΩ
Maximum Voltage : more than 5 kV
VOLTAGE
TC (+) : + 3600 V ± 72 V (PRINTING)
TC (-) : - 500 V ± 50 V (CLEANING)
Type
-3980V
-3600V
-3220V
Time(s)
FO-IS125N
Tolerance
± 72V