Sony DNW-A100 Maintenance Manual page 504

7-1-10. Audio Level Check and Adjustment in REV Mode
Adjustment
9. Adjust the TG-5 (Threading Roller) Height
(1) Play back the 1 kHz, 0VU signal portion (8:00 to
10:00) on the CR8-1A/PS.
(2) Put the unit into the REV
(3) In case the level increases when portion A of the tape
shown in the figure is pressed down, turn the upper
flange of TG-5 clockwise using a tape guide adjust-
ment driver.
In case the level increases when portion B is pushed
up, turn the upper flange of TG-5 counterclockwise.
n
First, press the EJECT button to unthread the tape
when turning the upper flange of TG-5.
(4) Check the audio output level satisfies specification 1.
(Refer to steps 5 through 8.)
If the specification 1 is not satisfied, repeat steps (1)
through (3) mentioned above.
6TG-3(Exit guide)
5Lead of drum
exit side
AT erase head
7-44
x 1 mode.
7TG-4 8TG-5(Threading roller)
A
B
Capstan
AT head
5
Spec.2: Lead of drum exit side
The tape runs in contact with the drum lead and
without any curl at the lead.
6
TG-3(Exit guide)
The tape runs in contact with the upper flange.
The tape curl is less than 1/10 of the tape width.
7
TG-4
The tape runs in contact with the lower flange.
The tape curl is less than 1/10 of the tape width.
8
TG-5(Threading roller)
The tape runs without any curl at the upper and lower
flanges.
Audio Level Adjustment in REV Mode
10. Check the Tape Running at Drum Exit Side
In the modes below, check that the tape running condition
satisfies specification 2.
(1) PLAY mode
(2) REV x 1 mode
If specification 2 is not satisfied, adjust the tape guides
height at the drum exit side. (Refer to steps 12 through 14
(at the Drum Exit Side) in Section 7-1-2.)
If the height of the tape guide is adjusted, perform the
video tracking check.
(Refer to Section 7-1-3.)
Pinch roller
DNW-A100/A50/A45
DNW-A100P/A50P/A45P