HT-DDW870, STR-K870P - Sony Audio Service Manual (repair manual). Page 13

Read Sony HT-DDW870 / STR-K870P Service Manual online

13
13
STR-K870P
STR-K870P
• Waveforms
– DIGITAL Board –

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
c
: DIGITAL
I
: VIDEO
• Abbreviation
AUS
: Australian model
CND
: Canadian model
E51
: Chilean and Peruvian models
MX
: Mexican model
SP
: Singapore models

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.
• Indication of transistor.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the 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.
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.
1
 
IC1501
 
9
 
(MCLK1) 
1 V/DIV, 40 ns/DIV
72 ns
3.4 Vp-p
2
 
IC1101
 
id
 
(X1) 
1 V/DIV, 20 ns/DIV
41.6 
µ
s
4.2 Vp-p
3
 
IC1301
 
ws
 
(XIN) 
1 V/DIV, 40 ns/DIV
81 ns
4.4 Vp-p
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
MEMO
Display
Click on the first or last page to see other HT-DDW870 / STR-K870P service manuals if exist.
Random: