Sony KPR-41EXR95 Service Manual page 65

(ST VCO ADJUSTMENT (MPX, STEVI
1) Set to Service Mode.
2) Select TEST with a and i, set the data to "1".
And then press m to MONO.
3) Select MPX, set the data "8" .
4) Connect an audio oscillator to R 224 using
electrolytic capacitor (10~
frequency V . Then, apply DC voltage to mute of
ST
TUVIF TU 101 using lOk0 connect to 9.0 V line.
audio oscillator
Vfh : SINE-WAVE 15.734 KHz&O.1
LEVEL 0.28 Vp-p
5) Select STEV withmand1, set the data to "00"
the data to Dl before SAT2 changes from 0 to 1.
6) Send up data gradually, set the data to D2 when
SAT2 changes 1 from 0.
7) Adjust the data of STEV to
8) Write into the memory by pressing -1 -+
SAT2
1) Set to Service Mode.
2) Select TEST with mand M, set the data to "0"
3) Select MPX with 1 and B, set the data to "08"
4) Write into the memory by pressing I1LIUTn\JGI +
1) Set to the Service Mode.
2) Select PILO withmandm, set the data to "08"
3) Write into the memory by pressing -1
10 K
1) Set to Service Mode.
2) Input a stereo broadcast signal with SAP.
K H z
3) Select TEST with m and m, set the data to "0" .
4) Connect a digital multimeter to TP-l(DBX).
5) Press MTS to SAP and this voltage will equal V 2.
6) Select SAPV with m and w, adjust H and m so that
7) Write the memory by- -+ 1-1 .
1) Set to Service Mode.
2) Pressmlto
data
3) Select SEP and VD with m and m, adjust B and H
I
CANCEL ADJUSTMENT (PILO)]
And then, press mto
This voltage reading will equal V 1.
V 2=V l&O.03 VDC.
ADJUSTMENT
MAIN and receive a monoral broad
-cast signal.
In the next step, receive a stereo broadcast signal.
so that a clear stereo sound is effected.
MAIN.