Hitachi HT-4139-28, Maintenance Manual

Page: 101 / 126

REV0 10.02.15
-H8-38-
■
Replacing the Sensor (PC11 Sensor), and (PC20 Sensor)
Tools Needed: Magnetic Philips Screwdriver (No.2)
①
Remove the Main Cover, the Side Cover, and the Back Cover. For instructions, please refer to “8.1
Preparation”
②
Remove the Guide (Lower Mirror), the Cover Sheet. For instructions, please refer to “8.3.13 Lower Mirror
ASSY”
③
Unscrew 6 screws on the Upper Guide ASSY, then remove the Upper Guide ASSY
H8-37
「■ Replacing the Prism (PC21 Sensor), the PC 22 ASSY (PC22 Sensor), the Prism (PC31 Sensor) 」
④
Remove the Pick Unit ASSY
⑤
Remove the Pick Cover (U)
⑥
Loosen the screws on the Ultra Sonic Sensor
⑦
Unscrew 4 bind-head screws on the M2-ASSY Cover, then remove the M2-ASSY Cover
M2-ASSY Cover
Bind-head screw
Bind-head screw
Bind-head screw
Bind-head screw
⑧
Unscrew 2 screws on the D1 Pinch Roller, and remove the Pinch Roller
⑨
Remove the Sensor
- Flip the M2-ASSY Cover and remove the clips on the Sensor (PC11 Sensor) and remove the Sensor
- Flip the M2-ASSY Cover and remove the clips on the Sensor (PC20 Sensor) and remove the Sensor
⑩
Attach the new Sensor
⑪
Take the reverse steps to attach the Sensor
⑫
After replacing the part, run Auto Calibration Test
#55 Sensor
（PC11 emission）
#55 Sensor (PC20 emission）
M2-ASSY Cover
Caution
：
： ：
：
When removing the Upper Guide ASSY, disconnect the PC22 cable connector, and
unlock the locking wire saddle.