Threading Arm Assembly Replacement - Sony HDW-750 Maintenance Manual

7-30. Threading Arm Assembly Replacement

Overview
Replacement
Removing the S-tension regulator band assembly
Removing the S-tension regulator assembly
Removing the threading arm assembly
Cleaning the mount shaft
Applying oil to the mount shaft
Installing the threading arm assembly
Installing the S-tension regulator assembly
Installing the S-tension regulator band assembly
Cleaning the guide of the S-tension regulator (S5)
Cleaning the guide of the threading arm assembly (S4)
Adjustments after replacement
S3 guide height adjustment
S-Tension regulator operating position adjustment
FWD back tension adjustment
Tape run adjustment
Note
Height of S3 guides becomes the reference of the entire tape running system.
When threading arm assembly is replaced, be sure to adjust the S3 guide height.
Preparations
1. Turn off the main power.
2. Remove the front lid and outside panel assembly. (Refer to Section 1-4.)
3. Remove the cassette compartment. (Refer to Section 1-9.)
4. Check that the unit is in the unthreading-end state.
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The stop washer is used to fix the threading arm assembly.
Prepare a new stop washer (3-559-408-11) when replacing it.
Tools
. Stop washer fastening tool :
. Torque cassette (FWD back tension) : J-6323-890-A
. S3 guide height check tool :
. Cleaning cloth:
. Cleaning fluid:
. Torque screwdriver bit (for M1.4) :
. Torque screwdriver (for 3 kg) :
. Oil :
HDW-750/750CE V1
J-6323-530-A
J-6531-270-A
3-184-527-01
9-919-573-01
J-6325-110-A
J-6325-400-A
7-661-018-18
7-30. Threading Arm Assembly Replacement
7-97