AC-SD1, DAV-DZ830W, DAV-DZ850KW, DAV-HDX900W - Sony Audio Service Manual (repair manual). Page 3

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3
AC-SD1
AC-SD1
SECTION 2
DIAGRAMS

Note on Schematic Diagrams:
• All capacitors are in 
µ
F unless otherwise noted.  (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in 
Ω
  and 
1
/
4
 
W or less unless otherwise
specified.
•
C
: panel designation.
•
A
: B+ Line.
• Voltages are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Abbreviation
CND
: Canadian model
E32
: 110 – 240 V AC area in E model
MX
: Mexican model
TH
: Thai model
TW
: Taiwan model

Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
• Note for Printed Wiring Boards and Schematic Diagrams
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
C
B
These are omitted.
E
Q
SECTION 1
GENERAL
This section is extracted
from instruction manual.
AC adaptor
A
Speaker system cord (9)
B
POWER indicator (21)
C
POWER (ON/OFF) (21)
D
AC power cord (19)
•
IC Block Diagram
– DIAT POWER Board –
D 1
NC 2
S/GND 3
VCC 4
OLP/SS 5
FB 6
OCP/BD 7
DELAY
Q
R
S
+
–
+
–
+
–
Q
S
R
+
–
BOTTOM
SELECTOR
COUNTER
OSC
R
Q
S
SOFT START
+
–
OVP
REGULATOR
& ICONST
+
–
BURST
CONTROL
START/STOP
BURST
PROTECTION
LATCH
DRIVE
REGULATOR
OLP
BSD
BD
OCP
FB
IC901 STR-W6735N (CND, MX, TW)
STR-W6765N (EXCEPT CND, MX, TW)
   Note:
The components identi-
fied by mark 
0
  or dot-
ted line with mark 
0
 are
critical for safety.
Replace only with part
number specified.
   Note:
Les composants identifiés
par une marque 
0
 sont cri-
tiques pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ver. 1.2

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