Sony SLV-7700KME, Руководство по обслуживанию

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SLV-7700KME/7700KML
5-3 5-4
5-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS CIRCUIT BOARDS LOCATION
MB-77
KARAOKE DSP,
AUDIO I/O
PS-418
(POWER SUPPLY)
RP-233
(HEAD AMP)
SW-323
(FUNCTION SWITCH)
MJ-92
(MIC AMP)
IO-65
(FRONT JACK)
BD-21
(RF AMP)
TU-168
(TUNER)
LOADING CDM-14
(LOADING MOTOR)
CD-169
VCD MECHA
CONTROL, MPEG
HI-66
DISPLAY/FUNCTION
CONTROL
MA-303
VIDEO/AUDIO PROCESS,
SERVO/SYSTEM CONTROL
DRUM MOTOR
CAPSTAN MOTOR
CA-53
(CAM MOTOR)
AC-101
(ACE HEAD)
THIS NOTE IS COMMON FOR WIRING BOARDS
AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
(For printed wiring boards)
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Through hole is omitted.
• Circled numbers refer to waveforms.
• There are few cases that the part printed on diagram
isn’t mounted in this model.
• Chip parts.
C
B E
5
6 4
2 1 3
5
4 6
2 3 1
4 5
2 3 1
1 2
4 5 3
3
2 1
3
2 1
3
2 1
Transistor Diode
Kinds of capacitor
Temperature characteristics
External dimensions (mm)
(For schematic diagrams)
• All capacitors are in
µ
F unless otherwise noted. pF :
µ
µ
F. 50V or less are not indicated except for electrolytics
and tantalums.
• Chip resistors are 1/10W unless otherwise noted.
k
Ω
=1000
Ω
, M
Ω
=1000k
Ω
.
• 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.
• Some chip part will be indicated as follows.
Example C541 L452
22U 10UH
TA A 2520
• Constants of resistors, capacitors, ICs and etc with XX
indicate that they are not used.
In such cases, the unused circuits may be indicated.
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• Signal name
XEDIT
→
EDIT PB/XREC
→
PB/REC
• 2 : non flammable resistor
• 1 : fusible resistor
• C : panel designation
• U : B+ Line
•
V
: B– Line
• C : adjustment for repair.
• Circled numbers refer to waveforms.
• Readings are taken with a color-bar signal playback.
• 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.