Sony ST-S444ES Service Manual page 27

Note for schematic diagram:
fe} : nonflammable resistor.
4: internal component.
(___] : adjustment for repair.
: B+ bus.
—-——: B- bus.
Voltages are dc with respect to ground unless otherwise
noted.
Readings are taken under detuned conditions witha VOM
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark: FM/common
( ): AM
<>: MUTING OFF
<— }:MUTING ON
Refer to pages 19 and 20 for waveforms/voltages at circled
red numbers.
Switch
PRESET
PRESET
PRESET
PRESET
PRESET
PRESET
PRESET
PRESET
TUNING —
TUNING +
TUNE MODE
HI-BLEND
IF BAND
FM/AM
CAL TONE
MUTING/MODE
SCAN READ
MEMORY SET
POWER
PROGRAM
10k/9k
VOLTAGE SELECTOR
=» : signal path
Fluorescent tube indication
Voltage and waveform have benn measured under
condition shown above.
Note: The components identified by shading and mark
A\ are critical for safety. Replace only with
part number specified.
Note: Les composants identifiés par une trame et une
marque A sont critiques pour la sécurité. Ne les
remplacer que par une piéce portant le numéro
spécifié.
Note: Voltages are measured with a VOM (50k92/V).
ST-S444ES
1 2 3
4-3. PART OF MOUNTING DIAGRAM
(Serial No. Up to 300200 E model)
(Serial No. Up to 500100 AEP model)
(Serial No. Up to 600100 UK model)
(Serial No. Up to 700300 Canadian model)
(Serial No. Up to 800500 US model)
4-4. PART OF SCHEMATIC DIAGRAM
(Serial No. Up to 300200 E model)
(Serial No. Up to 500100 AEP model)
(Serial No. Up to 600100 UK model)
(Serial No. Up to 700300 Canadian model)
(Serial No. Up to 800500 US model)
1C602
TL_490CN
METER ORIVER
C614
0,022
ST-S444ES
-0,1V -0.1V -0.1V -0.1V
Q61I~Q620
OTAI44ES
CP606 |
(OOK 4