Sony TC-188SD - Section 3: Adjustments; 3-1. Mechanical Adjustments: Overview

| TC-188SD
SECTION 3
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
Clean the following parts with a denatured-
alcohol-moistened swab:
record/playback head pinch roller
erase head rubber belts
capstan
idlers
Playback
Back
Tension
Torque
Adjustment
— Playback Mode —
Use type CQ-102A cassette torque meter.
Demagnetize the record/playback head with
a head demagnetizer. (Do not bring the
head demagnetizer close to the erase head.)
Do not use a magnetized screwdriver for the supply reel spindle
adjustments.
After the adjustments, apply a suitable
locking compound to the parts adjusted.
Ey 5. The adjustments should be performed with
the rated power supply voltage unless other-
wise noted.
Change the hooking
position.
back tension
fever
Tape Path Adjustment
— Playback Mode —
1. Make an adjustment cassette as shown below.
Specification: 2.5—3.5 g-cm
(0.035—0.048 oz-inch)
OE):
—
C-120 oS Cut out hatched
tape cassette portions.
2. In playback mode and viewing from the
front, adjust the head heights to eliminate
tape curl and tape twist at arrowed portions.
erase head record/playback
3-513-237-01 (t=0.1)
3-513-237-11 (t=0.2)
Shim, head height adjustment
screwdriver