Nidek Medical CP-690, Service Manual

Page: 31 / 70

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5.5 Replacement of the Chart ASSY
Replacement part: Chart ASSY (U type: 33156-1400, M type: 33156-3400, F type:
33157-1400, T type: 33158-1400, P type: 33159-1400, I
type: 33160-1400, UK type: 33161-1400, A type:
33162-1400)
1. Remove the top and bottom cover ASSYs. (See 5.1.)
2. Disconnect the connector from J3 on the BA01 board.
* Cut the tie wrap (T18R) which ties the cables of the mask motor.
3. Remove the disk cover (M030). (See 5.1.)
4. Unscrew BS3 × 6
ZnC
to remove the VA
mask (M029).
5. Unscrew SB3 × 6 (n=2) to remove the
illumination ASSY (1200).
6. Unscrew BS3 × 6
ZnC
(n=2) to remove the
mask sensor and sensor fitting plate
(M009).
7. Unscrew SB4 × 10 (n=4), SW4 (n=4) and
mask sensor and sensor fitting plate
M009).PW4 (n=4) to remove the mask
ASSY.
* In order to remove the mask ASSY, slide it
to the rear side slightly and pull it out
upward.
8. Loosen HH4 × 6 (n=4) of the chart disk
retainer, pull out the chart ASSY from the
shaft of the chart motor by sliding the
chart ASSY and then insert the new chart
ASSY. (Do not tighten HH4 × 6.)
* Before mounting the new chart ASSY,
check that it has no dirt such as dust.
4
Chart ASSY
Mask ASSY
Mask motor
HH4×6
4
SB4×10
SW4
4
PW4
4
２
ＳＢ３×６
ＺｎＣ
ＢＳ３×６
ＺｎＣ
ＢＳ３×６
マスクセンサー
照明部ＡＳ
ＶＡマスク
２
Mask sensor
Illumination part AS
2
VA mask