Sony SAL50M28 Service Manual page 10

2-1-2. MF OPERATION RING AND TORQUE RING BLOCK
EXPLODED VIEW
HELP06
1 SW Flexible and Main Flexible Block
HELP09
6 Fixed Holding
Tube Block
(See Page 2-4.)
4 Torque Ring Block
HELP08
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
Note:
Select the friction spring and torque ring spring adjust
according to the rotation load of the torque ring as follows.
1. Use the friction spring B and torque ring spring adjust washer (1 piece) as reference.
2. Adjust the torque of the torque ring by changing the number of the
torque ring spring adjust washer (0 to 6 pieces).
3. If the rotation remains light even adjust the torque by torque ring spring adjust washer,
Replace the friction spring B to the friction spring A and adjust again.
Friction spring A (T = 2.05 mm): 2-684-266-01
Friction spring B (T = 1.32 mm): 2-684-267-01
A
B
B
A
(See Page 2-5.)
8 Spring Lever
5 Anti Slip Spring
0
Float Ring
9
Pinch Distance
Adjust
Washer-A
Block
2-3
![
Friction
Spring
!=
HELP13
!-
7
Operation
Focus
Ring Guide Nut
HELP10
HELP11
3 MF Operation Ring
2 Focus Rubber Ring
Torque Ring
Spring Adjust
Torque Ring
Holder
HELP12
HELP07