DAV-DZ340M, DAV-DZ640M, DAV-DZ840K, DAV-DZ840M, DAV-DZ940K, HBD-DZ340M, HBD-DZ640M, HBD-DZ840K, HBD-DZ840M, HBD-DZ940K - Sony Audio Service Manual (repair manual). Page 22

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HBD-DZ340M/DZ640M/DZ840K/DZ840M/DZ940K
22
SECTION  5
DIAGRAMS
For Schematic Diagrams.
Note:
•  All capacitors are in 
μF 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 
specifi ed.
•      f  : Internal component.
•  C : Panel designation.
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•  A : B+ Line.
•  B : B– Line.
•  Voltages and waveforms are dc with respect to ground 
under no-signal (detuned) conditions.
•  Voltages and waveforms are dc with respect to ground in 
service mode.
•  Waveforms are taken with a oscilloscope.
  Voltage variations may be noted due to normal production 
tolerances.
  no mark : TUNER (FM)
  <       > : DVD PLAY
       
*
  : Impossible to measure
•  Voltages are taken with VOM (Input impedance 10 M
Ω).
•  Circled numbers refer to waveforms.
• Signal path.
  F : 
TUNER
  J 
: DVD PLAY
  L : 
VIDEO
  r  : COMPONENT VIDEO
  N : 
MIC
  d : 
AUDIO 
IN
• Abbreviation
  E3 
: 240V AC area in E model
  E12 
: 220 – 240V AC area in E model
  E15 
: Iranian model
  EA 
: Saudi Arabia model
  PH 
: Philippines model
  RU 
: Russian model
  SP 
: Singapore model
 TH  : 
Thai 
model
For Printed Wiring Boards.
Note:
•  X : Parts extracted from the component side.
•      a : 
Through 
hole.
• 
 : Pattern from the side which enables seeing.
  (The other layers’ patterns are not indicated.)
Caution:
Pattern face side: 
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen 
from the pattern face are indicated.
Parts on the parts face side seen from 
the parts face are indicated.
•  Indication of transistor.
 
C
B
These are omitted.
E
Q
 
C E
B
These are omitted. 
• Abbreviation
  E3 
: 240V AC area in E model
  E12 
: 220 – 240V AC area in E model
  E15 
: Iranian model
  EA 
: Saudi Arabia model
  PH 
: Philippines model
  RU 
: Russian model
  SP 
: Singapore model
 TH  : 
Thai 
model
•  Circuit Boards Location
Note: The components identifi ed by mark 0 or dotted 
line with mark 0 are critical for safety. 
 
Replace only with part number specifi ed.
MAIN board
POWER KEY board
KEY board
USB board
LED board
(except DZ340M)
ALC board
(DZ340M/DZ640M/DZ840M)
MS-203 board
IO board
POWER board
PANEL board
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