Electrical Adjustments - Sony TC-K333ESA Service Manual

TC-K333ESA/K990ES
4. (Declination Adjustment)Leaving it in the playback
position, put the back tension to O and make certain the
erasehead part and supply pinch roller guide part do not
shift, If there is a shift, turn the screw @ and change the
declination. Looking at it using the mirror cassette , if the
tape shifts up, tighten the screw, and if it shifts down,
loosen the screw.
5. Repeat the adjustments beginning with step 2 and fine
adjust the height and declination. And make sure the tape
does not curl up on the pinch roller guide or the guide
part of the record/playback head.
6. (Depth Adjustment)In order to make the entire head
play the tape smoothly, and to make sure the depth of the
erasehead is neither too shallow nor too deep, loosen
screw @ a bit.
About 0.5 mm
eee Pe eel
ar ae ay we
Erasehead —~
Normal
Record/ playback
Not deep enough Too deep
1. Check to make sure that there are no curls or shifts
throughout the whole tape path and that the tape runs
smoothly.
2. Reapply the locking compound to the adjusted screws.
(The locking compound should only be applied to screw
@ after the azimuth has been adjusted.)
Adjustment Position: As seen from the cassette,
side (top) and MD as seen head
on (bottom).
Pinch Roller Pressing Force Measurement
Mode: playback
Hook needle of the tension gauge to the pinch roller shaft
and push back pinch roller to detach it from capstan .
Then, return it gradually to capstan and read the gauge
when the pinch roller begins turning.
Standard Limits:
Tape-up side: 270 — 350 g(9.5 — 120z)
Supply side: 180 — 280g(6.4 — 9.90z)
capstan
pinch roller
tension gauge
Torque Adjustment and Measurement
1. Insert a tape for torque measurement, CQ-102C, and put
the set to PLAY mode. Adjust RV801 so that the reading
of the torque meter is 40 + 5g.cm.
2. After the adjustment, measure the back—tension and the
FF/REW torque and check that the following specifi-
cations are satisfied.
CQ102C | 30 -60g*em (0.42—-0.830z+inch)
FWD
Back tension
FF/REW CQ-201B 65 —90g+cm (0.90 —1.250z+inch)
CQ-102C =| 7—11g-cm (0.09 +0.0150z+inch)
3-2. ELECTRICAL ADJUSTMENTS
Note: The adjustment should be performed in the order
given in this service manual.
The adjustment should be performed for both L-CH
and R~CH.
@ Simultaneous REC/PB Mode:
Input the signals to LINE IN terminal and set to REC
mode. Set the monitor switch to TAPE, and. monitor the
recorded signal from LINE OUT terminal.
e Switch Position:
DOLBY NR Ooo eee eeeeerereeneseerenssoeesenesnese OFF
ee TIMER crrvecsreestertetscstceecsssessseoesoonsssens OFF
Ser" MONITOR oer eee ee ree reerer er ee eer errr eer eee ee TAPE
\ 2 HX PRO crvrserrecceseceeeesesceesersertecenneseees OFF
CALIBRATION eee ee eeee eee ee eee eee erer er eres) OFF
Supply pinch Takeup pinch CD DIRECT sos hes paisieeinciisiosseteess OFF
roller Erasehead Record/playback roller BIA Sscectnahitneararg) CENTER CLICK
ieee REC LEVEL *sss--+00 CENTER CLICK