Upper Drum Assembly Replacement - Sony HDW-750 Maintenance Manual

7-2. Upper Drum Assembly Replacement

7-2. Upper Drum Assembly Replacement
Overview
Replacement
Removing the cleaning assembly
Removing connector from brush assembly
Removing the full top sensor assembly
Removing the drum assembly
Installing the drum assembly to drum install plate
Removing the brush cover
Removing the brush assembly
Removing the slip ring assembly
Removing the upper drum assembly
Cleaning the drum contact surface
Installing the upper drum assembly
Installing the upper drum eccentricity adjustment tool
Adjusting Upper drum eccentricity
Removing the upper drum eccentricity adjustment tool
Installing the slip ring assembly
Installing the brush assembly
Installing the brush cover
Removing the drum assembly from drum install plate
Cleaning the drum contact surface
Installing the drum assembly
Installing the full top sensor assembly
Installing the cleaning assembly
Connecting the connector to brush assembly
Cleaning the cleaning assembly and tape running surface
Adjustments after replacement
Tape run adjustment
Video tracking adjustment
CTL head height adjustment
CTL head position adjustment
CUE/TC head height adjustment
CUE/TC head position adjustment
Drum phase adjustment
Note
If rotary heads are worn out or broke, replace the entire upper drum assembly. The
head chip cannot be replaced independently.
Basic Information
Apart from the periodic replacement time, the upper drum assembly needs to be
replaced in the following cases.
. If a correct RF waveform cannot be obtained after the tracking adjustment.
7-8
HDW-750/750CE V1