Sony ST-SP55 Manual de serviço - Página 2
Procurar online ou descarregar pdf Manual de serviço para Sistema estéreo Sony ST-SP55. Sony ST-SP55 16 páginas. Micro hi-fi component system
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- 1. 1 Service Note
- 2. 2 General
- 3. 3 Diagrams
- 3. Circuit Boards Location
- 3. Block Diagram
- 3. Schematic Diagram - Main Section
- 3. Printed Wiring Board - Main Section
- 3. Schematic Diagram - Panel Section
- 3. Printed Wiring Board - Panel Section
- 3. IC Pin Functions
- 3. IC Block Diagram
- 3. Table of Contents
- 3. Case and Front Panel
- 4. 4 Exploded View
- 5. 5 Electrical Parts List
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THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
4
specified.
•
: internal component.
f
• C : panel designation.
Note:
The components identified by mark 0 or
dotted line with mark 0 are critical for
safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• no mark : FM
∗
: Can not be measured.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD
d
: TAPE
G
: REC (TAPE/MD)
j
: MD
• Abbreviation
MY
: Malaysia model.
SP
: Singapore model.
HK
: Hong Kong model.
KR
: Korea model.
AED : North European model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Through hole.
a
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
C
Q
These are omitted
B
E
B
C
E
These are omitted
4
SECTION 3
DIAGRAMS
W or less unless otherwise
05/28/2012
• WAVEFORMS
– MAIN BOARD –
1
IC701 qa XCOUT
2.7Vp-p
30.5µsec
2
IC701 qd XOUT
4.6Vp-p
100nsec
3-1. CIRCUIT BOARDS LOCATION
tuner unit (FM/AM)
LED board
PANEL board
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PIN JACK board
MAIN board