Sony TC-377 Service Manual page 12

2. Tape Curl Adjustment
tension regulator
arm pin
capstan
tape guide (L) tape guide (R} bearing
EH
wron
9 screws good
tape 4
A
tape guide tape guide
Procedure:
1.
Thread SONY tape super 200 (thin tape) and
place unit in playback mode at 4.8 cm/s
(17/g ips) tape speed.
Be sure that the tape comes in contact with
two tape guides exactly as shown.
a) If tape is curled at tape guide (L), adjust by
bending tension regulator arm pin with
fingers.
b) If tape is curled at tape guide (R), loosen
two capstan bearing holding screws and
adjust by adding or removing the mylar
spacer,
Note: After adding or removing the mylar
spacer (0.1 mm thick), perform play-
back head zenith adjusting screw. (See
"Record and Playback Head Preadjust-
ment" on page 17.)
aD
mylar spacer
3. Playback Head Angle Adjustment
Control/Switch Setting:
TAPE SELECT switch: NORMAL
TAPE SPEED selector: 7% ips (19 cm/s)
MONITOR switch: TAPE
Procedure:
1. Mode: playback
J-19-F1 .
(1st tone 10kHz)!
LINE OUT
Adjust angle-adjusting screws for maximum
VTVM reading.
Apply back-tension by holding lightly the
supply reel table, reproducing the alignment
tape, and then adjust the angle of the head
by loosening two angle-adjusting screws so that
VTVM reading on both L-CH and R-CH does
not rise. -
Note: Unless playback head is installed at
correct angle, VTVM reading will rise.
angle adjusting screws
playback head
— 18 —