Hitachi HT-4139-28, Maintenance Manual

Page: 79 / 126

REV0 10.02.15
-H8-16-
8.3.6 Replacing the SS-Sensor (Ultra Sonic Sensor)
Tools Needed: Magnetic Philips Screwdriver (No.2)
①
Remove the Main Cover (L), the Side Cover (R). For instructions, please refer to “8.1 Preparation”
②
Unscrew 2 screws on the Main Button ASSY and remove the Main Button ASSY.
③
Unscrew 1 bind-head screw on the Ultra Sonic ASSY (Receptor) and remove the Ultra Sonic ASSY
(Receptor)
④
Remove the cable inside the Ultra Sonic ASSY (Receptor). Disconnect and replace the connector attached
to the SS-Sensor
⑤
To attach the SS-Sensor, take the reverse steps of
④
and
③
. When attaching the Ultra Sonic ASSY
(Receptor), push it in the direction of the arrow then screw the screws.
Bind-head screw
Bind-head screw
SS-Sensor ASSY（Receptor）
SS-Sensor ASSY（Receptor）
#35 Main Button ASSY
⑥
Unscrew 1 bind-head screw on the Ultra Sonic ASSY (Transmitter) and remove the Ultra Sonic ASSY
(Transmitter)
⑦
Remove the cable inside the Ultra Sonic ASSY (Transmitter). Disconnect and replace the connector
attached to the SS-Sensor
⑧
To attach the SS-Sensor, take the reverse steps of
⑦
and
⑥
. To attach the Ultra Sonic ASSY (Receptor),
push it in the direction of the arrow then screw the bind-head screw.
Ultra Sonic ASS Y (Transmitter)
Bind-head
screw
Ultra Sonic ASSY (Transmitter)
Connector Connector SS-SENSOR
#69 SS-SENSOR
⑨
Take the reverse steps of
②
,
①
to attach the Main Button ASSY.
⑩
After replacing the part, run the Auto Calibration Test. (refer to Chapter 6)