Sony SCD-XB780 Service Manual
SERVICE MANUAL
Ver 1.2 2002.10
SUPPLEMENT-1
File this supplement with the service manual.
Subject: Change of DISPLAY board. (Suffix-12)
SCD-XB780
AEP Model
UK Model
Korean Model
(ECN-CDB05128)
In this set, DISPLA Y board has been changed in the midw a y of production.
Printed wiring boards and schematic diagrams of new type, and changed
parts list are described in this supplement-1.
Refer to original service manual for other information.
• NEW/FORMER DISCRIMINATION
– DISPLAY BOARD (Component Side) –
Former : 1-683-976-11
New : 1-683-976-12
SCD-XB780
• DIAGRAMS
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• 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
C
Q
B
E
These are omitted.
Note on Schematic Diagram:
• 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
specified.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
•Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : SACD PLAY
•Voltages are taken with a V OM (Input impedance 10 MΩ).
Voltage var iations may be noted due to normal production tolerances.
•Waveforms are taken with a oscilloscope.
Voltage var iations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
: Impossible to measure
∗
1
4
/
W or less unless otherwise
2
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