Drum Assembly Replacement - Sony GY-2120WD Maintenance Manual

3-3. Drum Block

3-3-3. Drum Assembly Replacement

Outline
Replacement
1. Remove the Rotary Head Cleaner Assembly
(Refer to steps 1 and 2 in Section 3-3-4.)
2. Disconnect the Flexible Board (CN2/SE-358 Board)
3. Release the Air Stabilizer (Refer to step 4 in Section 3-3-1.)
4. Remove the Drum Assembly
5. Cleaning
(Drum Assembly Mounting Surfaces and Chassis Mounting Surfaces)
6. Install the Drum Assembly
7. Adjust the Aier Stabilizer Clearance (Refer to Step 10 in Section 3-3-1.)
8. Connect the Flexible Board (CN241/HN-223 Board)
9. Cleaning
(Rotary Heads, Upper Drum's Tape Running Surface and
Lower Drum's Tape Running Surface)
10. Install the Rotary Head Cleaner Assembly
(Refer to steps 4 through 6 in Section 3-3-4.)
Adjustment after Replacement
11. Confirm the Drum Motor Operation (SV16: Drum Motor Check)
(Refer to Section 6-2.)
12. Adjust the Tape Running (Refer to Section 5-3.)
13. Perform the PG Adjustment (SV1E: Manual PG Adjustment)
(Refer to Section 6-2.)
14. Adjust the Tracking (Refer to Section 5-4.)
15. Confirm the Drum Head Height (Refer to Section 5-9.)
16. Adjust the CTL/TC Head Height (Refer to Section 5-5.)
17. Adjust the CTL/TC Head Azimuth (Refer to Section 5-6.)
18. Adjust the CTL/TC Head Position (Refer to Section 5-7.)
19. Confirm the Tape Running (Refer to Section 5-3.)
20. Perform the Drum Phase Automatic Adjustment
(SV0B: RF Switching Position Adjust) (Refer to Section 6-5-11.)
21. Perform the Playback System All Adjustment (RF01: PB All Adjust)
(Refer to Section 6-6-1.)
22. Perform the Recording Current Automatic Adjustment
(RF05: REC Current Adjust) (Refer to Section 6-6-5.)
3-34
GY-2120WD/WS