Sony HVR-V1U Service Manual page 289

Digital hd video camera recorder
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3-2.
TG2/TG4 Guide Coarse Adjustment
1)
Play back the tracking standard (XH 2-1) (Ref. No. J-13).
2)
Adjust the TG2 and TG4 guides until the RF envelope waveform
becomes flat. (Refer to Fig. 6-2-11.)
Pinch roller
TG6 guide
TG5 guide
TG4 guide
TG3 guide
3-3.
FWD Back Tension Adjustment
1)
Set the mini DV torque cassette (Ref. No. J-23) and establish
the FWD mode.
2)
Confirm that the S side torque cassette reading value is in the
range as shown below.
0.29 to 0.39 mN•m (3.0 to 4.0 gf•cm)
If the measurement value does not satisfy the specifications,
perform the following adjustment.
• If the measurement value is higher than the specification:
(Decreases the spring tension)
Move the tension coil spring hook to another spring stay in
the direction of B.
• If the measurement value is lower than the specification:
(Increases the spring tension)
Move the tension coil spring hook to another spring stay in
the direction of A.
Tension regulator spring
A
B
LS chassis ass'y
HVR-V1J/V1U/V1N/V1E/V1P/V1C
TG2 guide,
Adjustment nut
Drum
TG4 guide,
Adjustment nut
TG1 guide
TG2 guide
Fig. 6-2-9
Tenshion regulator
ass'y (TG1 guide)
Fig. 6-2-10
3-4.
TG2/TG4 Guide Fine Adjustment
1)
Play back the tracking standard (XH 2-1) (Ref. No. J-13).
2)
Adjust the TG2 so that the RF envelope has the larger amplitude
at the entrance side first, than adjust TG2 guide for flat
amplitude. (Refer to Fig. 6-2-11.)
3)
Adjust the TG4 so that the RF envelope has the larger amplitude
at the exit side first, than adjust TG4 guide for flat amplitude.
(Refer to Fig. 6-2-12.)
Entrance side
Entrance side
6-125
Exit side
Fig. 6-2-11
Exit side
Fig. 6-2-12

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