Sanyo HEC-DR7700 Service Manual page 24

Replacement Procedure
(15) Replacement of PCB (Tapping pulse) and
PCB(elvation pulse)
1, Disconnect the connector CN921 of the PCB
(tapping pulse).
2, Remove one PCB (tapping pulse) set screw
and take off the PCB (tapping pulse).
3, Disconnect the connector CN911 of the PCB
(elevation pulse).
4, Remove two PCB (elevation pulse) set screws
and take off the PCB (elevation pulse).
PCB set screws
PCB (elevation pulse)
PCB set screw
(16) Replacement of Motor (elevation)
* Take off the motor (massage) in advance.
1, Remove each cord processing.
2, Remove two stay motor (elevation) set screws.
3, Remove two motor (elevation) set screws.
Motor set screws
Stay set screws
Photo-28
Photo-28
Photo-28
Photo-28
PCB (tapping pulse)
Photo-28
Photo-29
Photo-29
Motor (elevation)
Photo-29
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4, Disconnect the belt (elevation).
5, Remove two gear box (elevation) set screws,
slide the gear box outwards, and turn it
clockwise as shown in Photo-32.
6, Remove two stay motor (elevation) set screws.
Motor (elevation)
Gear box set screws
7, Remove two motor (elevation) set screws and
take off the motor (elevation).
* Exercise care so as not to adhere grease to
the driving portions such as belt (Failure to
observe this precaution may lead to
malfunction due to slippage).
Stay (Motor (elevation))
Motor (elevation)
Turn
Gear box
HEC-DR7700
Photo-30
Photo-30, 31
Photo-30
Stay (Motor (elevation))
Stay set screws
Belt (elevation)
Photo-30
Photo-31
Motor set screws
Photo-31