Overhauling Procedures - Mitsubishi Electric JT-SB116JH-G-NA Handbook

13. Overhauling procedures

Work precautions
• Before replacing parts, follow the instructions described in the troubleshooting.
• When servicing, always take care to keep proper footing.
• Before starting the service, always unplug the power cord from the outlet, or turn off the circuit breaker when
no power cord plug is provided. Sufficient care must be taken to avoid electric shock or injury.
• Make sure to connect the power supply wires correctly.
• After completing repairs, check that the unit operates properly.
Always wear gloves when servicing.
The following pictures show JT-SB116JH-G-NA.
( 1 ) Turn off the power supply.
1 Stop the operation.
2 Turn off the circuit breaker on the distribution board.
(2) Light receiving circuit board (JT-30S1)
1 Unscrew the clamping screws, and remove the maintenance (maint.)
cover.
(Two special (spl.) screws 4 x 16, indicated by )
Assembly precaution
Insert the maint. cover into the groove of the base. (Indicated by )
2 Remove the fix plate.
Assembly precautions
• Run the lead wires through the groove of the maint. cover.
(Indicated by )
• Take care not to pinch the lead wires.
3 Remove the light receiving circuit board (JT-30S1).
─ 17 ─
Maint. cover
Fix plate
Maint. cover
Light receiving circuit board (JT-30S1)