Sony GY-8240UWD Maintenance Manual page 95

Note
When the rotary head tip is worn or damaged, replace the upper drum assembly. It
cannot be replaced only head tip.
Basic Knowledge
Exept in the periodic replacement time, replace the upper drum assembly when a
correct RF signal waveform cannot be obtained even if the tracking adjustment is
performed.
Tools
. Hexagonal wrench driver (2.5 mm):
. Torque screwdriver (6 kg.cm) (JB-5251):
. Torque screwdriver (12 kg.cm) (JB-5252):
. Torque screwdriver's bit (+2 mm, l = 75 mm):
. Torque screwdriver's hexagonal bit (d = 2.5 mm, l = 120 mm): J-6251-090-A
. Cleaning cloth:
. Cleaning fluid:
. Upper drum remover:
Preparation
1. Turn the power off and remove the power cord.
2. Remove the top panel. (Refer to Section 1-1.)
3. Remove the plate MD. (Refer to Section 1-2.)
4. Remove the cassette compartment. (Refer to Section 1-2.)
Removal
1. Removing the W Cleaner Assembly
Remove the W cleaner assembly.
(Refer to steps 1 and 2 in Section 3-5.)
2. Removing the Brush Slip Ring Assembly
Remove the brush slip ring assembly.
(Refer to steps 1 and 2 in Section 3-4.)
GY-8240UWD
GY-8240FC
3-2. Upper Drum Assembly Replacement
7-700-766-04
J-6252-510-A
J-6252-520-A
J-6323-420-A
3-184-527-01
9-919-573-01
Supplied with a
new repair upper
drum
3-9