Sony HVR-A1J Service Manual page 275

3-6. TG6 Height Adjustment
Note:
Perform "TG6 height adjustment" using the end segment of the
tape which is within the last 5 minutes from the end of the thin
DVM-80 tape (commercial item).
When using the DVM-80 (commercial item), use the modified
one by removing the cassette rid (Refer to Page 6-107. Adjustment
Preparation 9)).
1) Play back the tape (DVM-80) (commercial item).
2) Press the FF button to enter the CUE mode and measure the
tape height after 5 seconds have elapsed. (Fig. 6-2-14)
3) Release your finger from the FF button and press the REW
button to enter the REV mode.
Measure the tape height after 3 seconds have elapsed.
4) Release your finger from the REW button.
5) Adjust the TG6 height so that the tape height in the CUE mode
is the same as that in the REV mode.
Adjust the TG6 height by rotating the adjustment nut of the
TG6 guide in the following manner.
• Tape height in the REV mode is higher t Rotate the
adjustment nut clockwise
• Tape height in the REV mode is lower t Rotate the
adjustment nut counter-clockwise
Capstan motor shaft
Pinch roller
Tape height in the
REV mode is higher
Tape height in the
REV mode is lower
TG6 guide
TG5 guide
TG4 guide
Fig. 6-2-14
HVR-A1J/A1U/A1N/A1E/A1P/A1C
Capstan motor shaft
Adjust so that they
have the same height
Capstan motor
Drum
TG6 guide,
Adjustment nut
6) Repeat the steps from 2 to 5 until the tape height in the CUE
mode and REV mode becomes the same.
3-7. Tape Run Check
1) Play back the tracking standard (XH 2-1) (Ref. No. J-13).
Establish the CUE mode first then the REV mode. Confirm in
the respective modes that there are no large tape curls at the
upper flange of TG2 and TG4. Then confirm in the respective
modes that there are no large tape curls at the upper and lower
flanges of TG1 and TG6.
T reel
Pinch roller
Capstan
TG6 guide TG5 guide
Tape must run while maintaining contact with the upper flange.
There must not exist a large tape curl.
There must not exist
a large tape curl.
Capstan
TG5 TG4
TG6
6-110
S reel
Drum
TG2 guide
TG3 guide
TG4 guide
There must not exist
a large tape curl.
FWD
Tape
TG3 TG2
TG1
Fig. 6-2-15
TG1
guide