Sony Trinitron KV-25XBR Service Manual page 22

1 connector.
roNO mode.
pins@ and
J
outputs of
frequency
counter
--~~ II
II
RMS meter
frequency
counter
L.,____!,__ ____
l~~
I II
I
oscilloscope
f]
Ll
9V
10
kn
KV-25XBR
RM-724/APM-X3U
9V
oscillator
70kO
300Hz
~
(
10 µF
i
16V
I
SAP DECODER vco 1
I
1. Connect the frequency counter (high input impedance,
C;n <r1000pF) to pin
@
of IC1102.
2. Receives a no MPX signal input at pin
(j)
of X-1
connector.
3. Adjust RV1102 to 78.67 kHz
±
300 Hz.
I
SAP GAtNI
1. Receives a SAP signal from a MTS ENCODER to pin
(j)
of X-1 connector.
2. Set
the
/i/!TS
ENCODER
switch as
shown;
Noise reduction . . . OFF
SAP ............. ON
SUB . . . . . . . . . . . . ON or OFF
STEREO PILOT . . . ON or OFF
3. Set to the SAP mode.
4. Adjust RV1103 to 332
±
10 mVrms on emitter of
01110.
+
,OµF
16 V
,
'
MTS
Encoder
I
STEREO DECODER vco
21
400Hz
oscillator
SAP IN
1. Connect the frequency counter (high input impedance,
C;n «1000pFJ to the point between R1124 and
RV1101.
2. Receives a no MPX signal input at pin
(j)
of X-1
connector.
3. Set to the STEREO mode. (Open the pin
(j)
of X-1
connector.}
4. Adjust RV1101 to 62.936 kHz
±
300 Hz.
-25 - _
KV-25XBR
RM-724/APM-X3U
- 26 ~