40
VT-G14
VT-G21
REPLACEMENT OF DRUM D.D. MOTOR
1. Set the eject mode.
2. Withdraw the main power plug from the socket.
• Removal (Perform in numerical order.)
1. Disconnect the FFC cable 1.
2. Unscrew the D.D. stator assembly fixing screws 2.
3. Take out the D.D. stator assembly 3.
4. Unscrew the D.D. rotor assembly fixing screws 4.
5. Take out the D.D. rotor assembly 5.
Notes:
1. In removing the D.D. stator assembly, part of the
drum earth spring pops out of the pre-load collar.
Be careful not to lose it.
2. Install, so that the D.D. rotor ass'y and upper drum
ass'y mounting direction check holes align.
(Align the upper drum dent with the rotor hole.)
3. Be careful not to damage the upper drum or the video
head.
4. Protect the hole elements from shock due to contact
with D.D. stator or D.D. rotor ass'y.
5. After installation adjust the playback switching point
for adjustment of servo circuit.
Figure 1-38.
REPLACEMENT OF THE CAPSTAN D.D.
(DIRECT DRIVE) MOTOR
• Remove the mechanism from the main PWB (refer to
"7. Remove the 4 mechanism chassis fixing screws,
and detach the mechanism chassis from the Main
PWB" on page 7.).
• Removal (Follow the order of indicated num-
bers.)
1. Remove the reel belt 1.
2. Remove the three screws 2.
Figure 1-37.
• Reassembly
1. Taking care so that the capstan shaft does not
contact the mechanism chassis, set its position on
the mechanism chassis, and then install with the
three screws.
2. Install the reel belt.
Notes:
1. After installing the capstan D.D. motor, be sure to
rotate the capstan D.D. motor and check the move-
ment.
2. Set the tape, and check for the tape crease near the
reverse guide in the playback mode. Adjust the A/C
head and azimuth as stated in Page 38 item 2. If
crease is found, adjust as stated in Page 37 "HEIGHT
ADJUSTMENT OF REVERSE GUIDE".
Capstan D.D. motor
control PWB
Capstan D.D.
motor
1 Reel belt
1
4
4
5
3
2
Upper drum
D.D. rotor ass’y
D.D. stator ass’y
2
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