HT-1900DP, STR-K1900P - Sony Audio Service Manual (repair manual). Page 9

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9
9
STR-K1900P
STR-K1900P

For Schematic Diagrams.
Note:
• 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.
•      %
: indicates tolerance.
•         
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: ANALOG INPUT
c
: DIGITAL INPUT
• Abbreviation
CND
: Canadian model
E51
: Chilean and Peruvian models
MX
: Mexican model

For Printed Wiring Boards.
Note:
•
X
: parts extracted from the component side.
•        
a
: Through hole.
•        
f
: internal component.
•
: Pattern from the side which enables seeing.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each block.)
   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.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side B)
the parts face are indicated.
• Waveforms
– DIGITAL Board –
1
 
IC1101
 
wa
 (XOUT)
 
4.7 Vp-p
1V/div, 40ns/DIV
81.4ns
 (12.288MHz)
2
 
IC1201 
9
 
(MCLK1)
2.8 Vp-p
73.6ns (13.59MHz)
1V/div, 40ns/DIV
3
 
IC1601 
id
 
(XI)
3.5Vp-p
62.5ns (16MHz)
1V/div, 40ns/DIV
SECTION 3
DIAGRAMS
DIGITAL board 
MAIN board
DISPLAY board
HEADPHONE board
POWER board
TUNING board
STANDBY board
SUB WOOFER board
AC SELECT board
(E51 model only)
• Circuit Boards Location
Display
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