13 Procedure for Checking Operation of Individual Parts of
Deck Mechanism Unit
13.1. Operation Check with Cassette Tape
1. Pull up the EJECT lever using a rubber band. (Fig. 6)
2. Supply DC5V to MOTOR. (
→
MOTOR rotates.) (Fig. 5)
3. Insert a cassette tape to the unit.
4. Supply DC9V to the plunger, and turn the power ON and OFF. (
→
Power +PL, -PL) (Fig. 5)
a. FWD PLAY: Supply the plunger power in a flash. (ON: approx. 5msec)
b. FWD FF: Supply the plunger power in a flash at PLAY mode. (ON: approx. 5msec)
c. STOP: Supply the plunger power in a flash at FWD FF mode. (ON: approx. 5msec)
d. REV PLAY: Supply the plunger power in a normal timing at STOP mode. (ON: approx. 200msec)
e. REV REW: Supply the plunger power in a flash at REV PLAY mode. (ON: approx. 50msec)
f.
STOP: Supply the plunger power in a flash at FF mode. (ON: approx. 50msec)
Repeat the operation (
→
FWD PLAY)
(Note) Other operation may start if a timing of supplying the plunger power is missed.
13.1.1. Connection Status between Mechanism and Power Supply (Motor, Plunger)
13.1.2. Operative Parts of Deck Mechanism Unit (EJECT lever fitted with rubber band,
Plunger/Rib operation)
Fig. 6
13.2. Operation Check without Cassette Tape
1. Pull up the EJECT lever using a rubber band. (Fig. 6)
2. Supply DC5V to MOTOR. (
→
MOTOR rotates.)
3. Lift up the mechanism unit’s plunger/rib with the tip of a negative screwdriver, and operate the unit in the same timing as
supplying the power. (Fig. 7)
47
SA-AK750E / SA-AK750EB / SA-AK750EG
Summary of Contents for SA-AK750E
Page 9: ...9 SA AK750E SA AK750EB SA AK750EG ...
Page 14: ...14 SA AK750E SA AK750EB SA AK750EG ...
Page 27: ...10 3 Main Parts Location 27 SA AK750E SA AK750EB SA AK750EG ...
Page 39: ...10 17 1 Replacement of Pinch Roller and Head Block 39 SA AK750E SA AK750EB SA AK750EG ...
Page 46: ...12 4 Checking and Repairing of Power P C B 46 SA AK750E SA AK750EB SA AK750EG ...
Page 48: ...48 SA AK750E SA AK750EB SA AK750EG ...
Page 52: ...15 3 Power P C B Transformer P C B 15 4 Panel P C B 52 SA AK750E SA AK750EB SA AK750EG ...
Page 53: ...15 5 Main P C B 53 SA AK750E SA AK750EB SA AK750EG ...
Page 54: ...15 6 Deck P C B 15 7 Waveform Chart 54 SA AK750E SA AK750EB SA AK750EG ...
Page 56: ...56 SA AK750E SA AK750EB SA AK750EG ...
Page 64: ...SA AK750E SA AK750EB SA AK750EG 64 ...
Page 66: ...66 SA AK750E SA AK750EB SA AK750EG ...
Page 86: ...SA AK750E SA AK750EB SA AK750EG 86 ...
Page 91: ...23 Exploded Views 23 1 Cabinet Parts Location SA AK750E SA AK750EB SA AK750EG 91 ...
Page 92: ...SA AK750E SA AK750EB SA AK750EG 92 ...
Page 93: ...23 2 Deck Mechanism Parts Location RAA4403 S SA AK750E SA AK750EB SA AK750EG 93 ...
Page 94: ...23 3 Packaging SA AK750E SA AK750EB SA AK750EG 94 ...