Sony SLV-662HF Operating Instructions (SLV-662HF / 679HF / 679HF PX VCR), Руководство по обслуживанию, Страница: 37 / 72

SLV-662HF/679HF
SECTION 4
PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
• For Printed Wiring Boards.
•
b
: Pattern from the side which enables seeing.
• For Schematic Diagrams.
• Caution when replacing chip parts.
New parts must be attached after removal of chip.
Be careful not to heat the minus side of tantalum
capacitor, because it is damaged by the heat.
• All resistor are in ohms, 1/4 W unless otherwise noted.
Chip resistor are 1/10 W unless otherwise noted.
k
Ω
: 1000
Ω
, M
Ω
, : 1000 k
Ω
.
• All capacitors are in
µ
F unless otherwise noted. pF :
µ
µ
F. 50 V or less are not indicated except for electrolytics
and tantalums.
• C : panel designation.
• : internal component.
• U : B+ Line.
• V : B– Line.
• Circled numbers refer to waveforms.
• Readings are taken with a PAL color-bar signal input.
• Voltage are dc between ground and measurement points.
• Readings are taken with a digital multimeter (DC10M
Ω
).
• Voltage variations may be noted due to normal production
tolerances.
When indicating parts by reference number, please
include the board name.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
4-1 4-2
1
IC260 4 REC/PB
2
IC260
5
REC/PB
3
IC260 7 PB
4
IC260
9
REC
5
IC260
!º
REC
6
IC260
@™
REC
3.6Vp-p
V
3.4Vp-p
H
0.4Vp-p
V
480mVp-p
0.1
µ
sec/div
50mV/div
0.1
µ
sec/div
0.5V/div
H
MA-341
BOARD
(VIDEO BLOCK (IC260))
!¶
IC201 2 REC
!•
IC201
7
REC
!ª
IC201 @£ PB
@º
IC201
@•
REC/PB
@¡
IC201 @ª PB
@™
IC201
(•
@£
IC201 #¶ REC
@¢
IC201
^¶
REC/PB
@∞
IC201
1
PB
480mVp-p 2.3Vp-p
1.5Vp-p
1.0Vp-p
460mVp-p
0.4Vp-p
H
0.1
µ
sec/div
0.1V/div
480mVp-p
4.2Vp-p
H
H H
30Hz
H
@¡
IC201
@ª
REC
2.2Vp-p H
3.579545MHz
RF SW P
REC/PB
MA-341
BOARD (VIDEO BLOCK (IC201))
• Abbreviation
CND : Canadian