3-35
GY-2120WD/WS
Note
Be careful not to damage the CTL/TC head and peripheral tape guides when remov-
ing or installing the drum assembly.
Basic knowledge
For except the periodic replacement time, replace the drum assembly in the follow-
ing cases.
.
The upper or lower drum’s tape running surface is damaged and cannot be
repaired.
.
A correct RF signal waveform cannot be obtained due to the worn upper or lower
drum even if the tracking adjustment is performed.
.
The performance of the unit deteriorates because of the noise or jitter caused by
the bearing life.
Tools
.
Hexagonal wrench driver (2.5 mm):
7-700-766-04
.
Torque screwdriver (6 kg
.
cm)(JB-5251):
J-6252-510-A
.
Torque screwdriver (12 kg
.
cm)(JB-5252):
J-6252-520-A
.
Torque screwdriver’s hexagonal bit (d=2.5 mm, l=120 mm): J-6251-090-A
.
Cleaning cloth:
3-184-527-01
.
Cleaning fluid:
9-919-573-01
Preparation
1.
Turn the power off.
2.
Remove the upper lid. (Refer to Section 1-1-1.)
3.
Remove the plate MD. (Refer to Section 1-1-1.)
4.
Remove the cassette compartment. (Refer to Section 1-1-2.)
3-3. Drum Block
Summary of Contents for GY-2120WD
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Page 469: ...8 1 GY 2120WD WS 8 1 Section 8 Block Diagrams Frame Wiring ...
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