Yamaha EMX 68S, Руководство по обслуживанию

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18
EMX68S / EMX88S
8. PWR Circuit Board 1/4
(Time required: about 13 min)
8-1. Remove the rear panel assembly. (See Procedure 5)
8-2. Remove the PWR circuit board 2/4. (See Procedure 6)
8-3. Remove the PWR circuit board 3/4. (See Procedure 7)
8-4. Remove the sixteen (16) screws marked [90] to
remove the TR holder A and the TR holder B.
(Fig.11)
8-5. Remove the six (6) screws marked [40]. The PWR
circuit board 1/4 can then be removed. (Fig.12)
9. Fan (Time required: about 6 min)
9-1. Remove the rear panel assembly. (See Procedure 5)
9-2. Remove the two (2) screws marked [130]. The fan
can then be removed. (Fig.8)
10. Power Transformer (Time required: about 4 min)
10-1. Remove the front panel assembly. (See Procedure 1)
10-2. Remove the bolt marked [D]. The power trans-
former can then be removed. (Fig.13)
Note: When reinstalling the power transformer,
make sure to lead the cables to the direction
shown in Fig.14. Leading them to unfit
direction may cause hum noise on the
system.
Power Transformer
FRONT VIEW
[D]
(Fig. 13) (Fig. 14)
Power Transformer
FRONT VIEW
Direction to lead
the cables
Upper Side View Bottom Side View
PWR 1/4 PWR 1/4
[90] [90] [90] [90] [90]
[40] Rear Panel
(Fig. 12)
(Fig. 11)
[40]: Bind Head Screw SP 3.0X8 MFZN2Y
(EG330290)
[90]: Bind Head Tapping Screw-B 3.0X12 MFZN2BL (VQ074600)