Sony HVR-Z1J Service Manual page 313

4-4-5. TG7 Height Adjustment
Note: Perform "TG7 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.
1) Play back the tape (DVM-80).
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 TG7 height so that the tape height in the CUE mode
is the same as that in the REV mode.
Adjust the TG7 height by rotating the adjustment nut of the
TG7 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
6) Repeat the steps from 2 to 5 until the tape height in the CUE
mode and REV mode becomes the same.
Pinch roller
Measure the difference of tape run at the position which
is away by the distance of 1/2 diameter at the pinch roller
side from the center of the capstan motor.
Tape height in the
REV mode is higher
TG7 guide
Adjustment nut
Tape height in the
REV mode is lower
TG7 guide
TG6 guide
TG5 guide
HVR-Z1J/Z1U/Z1N/Z1E/Z1P/Z1C
Capstan motor shaft
Adjust so that they
have the same height
Capstan motor
Pinch roller
Fig. 6-2-14.
4-4-6. Tape Run Check
1) Play back the tracking alignment tape (XH 2-1) (Ref. No. J-
17). 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 TG3 and TG5. Then confirm in the respective
modes that there are no large tape curls at the upper and lower
flanges of TG1 and TG7.
T reel table
Pinch roller
Capstan
TG7 guide 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
TG6 TG5
TG7
6-113
S reel table
TG1 guide
Drum
TG3 guide
TG4 guide
TG2 guide
(tension regulator)
There must not exist
a large tape curl.
FWD
Tape
TG4 TG3 TG2
Fig. 6-2-15.
TG1