Tape Path Fune Adjustment - Sony DTC-1000ES Service Manual

I DTC-|OOOEIi
{-2-10.
Tap€ Peth FineA{iwtment
(r 15 FID Mode)
Adjwtment
A-djustment Point
Mechanical guides T1 and Sl
1. Conneet CH-l of an oscilloscope to pin @
of the offset jig.
Connect CH-2 of an æcillæcope to pin @
2 .
of t}te offset Jig.
Connect a 3.3 k-ohm resistor between pins 3
(GAIN 2) and 4 (GAIN 1) of CNTST.
Connect an offset jig to CNT51 and CNT52.
3 .
Guide Sl
Guide T1
A
4/5 or less $
4 . T\rrn on the power switch, insert alignment
tape TY-?251, and put the set into the TEST
mode.
Ar 4/5 or less
5. Press the AMS button, then press the PLAY
( ) ) button.
6 . Adjust guides 51 and T1 so that the shape of
an RF signal waveform on the oseillæcope is
close to a square when the offset jig volume
eontnol is turned.
(I\rrn the ATF control
carefully
so that the waveform veries
slowly.)
Remove the two leads (YEL and RED) of the
jig from CNT51.
(1) Checf that peak value (B) of the BF
signal waveform is 60 mV or more.
(2) Cheek that the undershoot level of the
RF signal wavefonmrs flat
portion is
within l0S.
If the speeif ication is not satisfied, repeat
Steps 3 through ?.
Note: Make this adjustment when replacing
the dnrm.
7 .
B/10 or less B/10 or less
8 .
OSC I LLOSCOPE
GND
c H - 2 ( S W P )
B/10 or less B/10 or less
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