Hitachi HT-4139-28 Maintenance Manual page 70

8.2.4 Replacing the Fluorescent Lamp (Back Side)
CAUTION：Wear gloves during this procedure;
To prevent injury from broken Fluorescent Lamp
To prevent the Fluorescent Lamp from being dirty
① Remove the Main Cover (L). For instructions, please refer to "8.1 Preparation"
② Unscrew 1 bind-head screw on the Lamp ASSY.
③ Disconnect the connector J73 and remove the Lamp ASSY by pulling it forward.
④ Loosen 2 washer faced heads screw and pull the Lamp Bracket in the direction shown below. Remove the
Fluorescent Lamp from the lamp socket.
⑤ Replace the Fluorescent Lamp
Caution: Do not use force to lift the Fluorescent Lamp.
To attach the Fluorescent Lamp, push in the Fluorescent Lamp and place the Lamp Heater over it. If you
apply pressure on the tip of the lamp, the lamp may get damaged.
Lamp socket
Pull
Insert
Remove
Mount
⑥ Take the reverse step to attach the Fluorescent Lamp to the device.
⑦ After attaching the Fluorescent Lamp, run the Auto Calibration Test (refer to Chapter 6)
#4 Fluorescent lamp
#39 Lamp ASSY
(Back)
Bind-head screw
#4 Fluorescent lamp
Lamp Bracket
Connector J83
Lamp Heater
Washe faced head screw
REV0 10.02.15
-H8-7-