Citizen CT-S851, Service Manual

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CT-S851 Series Service Manual
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1-2-2. Disassembling “UNIT, MECHANISM”
1. Disassembling “SA, COVER OPEN SENOR - F”
Remove two “SCREW, No. 0 PHT (BT#3), M1.7
×
7” that fasten “SA, MAIN FRAME” and “SA, COVER
OPEN SENSOR” (2 pcs), as well as the tape that secures “CABLE”.
<Precaution at reassembly>
When reassembling, align the “SA, COVER OPEN
SENSOR” switch with the hole at “FRAME, MAIN”, and
secure it with one screw.
Do not forget to attach a tape to secure the cable.
2. Disassembling “GEAR DAMPER”
Remove two “SCREW, BHT (ST), M2.0
×
4” that fasten “SA, MAIN FRAME” and “GEAR, DAMPER”.
<Precaution at disassembly / reassembly>
The unit can be mounted in either orientation.
This part is not compatible with the one for CT-S801.
3. Disassembling “GEAR REDUCTION”
Remove “SCREW, PHT (#2), M3.0
×
8” and “SCREW, PHT (ST), M3.0
×
6” that fasten “SA, MAIN
FRAME” and “COVER, GEAR-02”, and remove “GEAR REDUCTION” from “COVER, GEAR-02”.
<Precaution at disassembly /
reassembly>
If the screws are tightened
excessively when reassembling,
“COVER, GEAR” will be damaged.
Be careful not to tighten them
excessively.
SCREW, No. 0 PHT (BT#3), M1.7
×
7
SCREW, BHT (ST), M2.0
×
4
SCREW, PHT (ST), M3.0
×
6
SCREW, PHT (#2), M3.0
×
8
GEAR REDUCTION
COVER, GEAR-02