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4-2. CIRCUIT BOARDS LOCATION
(21V5B/6B)
4-3. PRINTED WRING BOARDS AND SCHEMATIC
DIAGRAMS
Note:
* Capacitors are with out voltage indication are all SOV.
+ All electrolytics are in 50V unless otherwise specified.
+ All resistors are in ohms.
k2=10002, M2=1000KQ
* Indication of resistance, which dose not have one for rating electrical power, is
as follows.
Pitch : mm
Rating electrical power: /4W
+ {EX} : nonflammable resistor.
+ PAG}
fusible resistor.
+ A : intemal component.
* (7: panel designation and adjustment for repair.
+ Allvariable and adjustable resistors have characteristic curve B, unless otherwise
noted.
* As to the voltage volue shown by the semiconductors on the Shematic Diagram,
'see the another list
+ Readings are taken with a color-bar signal input.
+ Readings are taken with a 10MQ digital multimeter.
* Voltages are de with respect to ground unless otherwise noted.
* Voltage variations may be noted due to normal production tolerances.
* All voltages are in V.
+ : Measurement impossibility.
+ GY :eutine
+ GY - auine.
(Actual measured value may be different).
+ >): signal path. (RF)
* Circled numbers are waveform references.
+ Measurement mode.
mo mark : REC/PB mode
(_): REC mode
<
>: PBmode
Reference information
RESISTOR
:RN
METALFILM
RC
SOLID
:FPRD NONFLAMMABLE CARBON
:FUSE NONFLAMMABLE FUSIBLE
:RW — NONFLAMMABLE WIREWOUND
NONFLAMMABLE METAL OXIDE
NONFLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL,
LF-8L_ MICRO INDUCTOR
CAPACITOR :TA
TANTALUM
STYROL
POLYPROPYLENE
MYLAR
:MPS
METALIZED POLYESTER
MPP
METALIZED POLYPROPYLENE
BIPOLAR
HIGH TEMPERATURE
HIGH RIPPLE
Note: The components identified by shading and mark A\ |
are critical for safety. Replace only with part number
specified.
Note: Les composants identifiés per un tramé et une marque
sont critiques pour la sécurité. Ne les remplacer
que par une piéce portant le numéro spécifié.
Terminal name of semiconductors in silk screen
printed circuit ( * )
Devies [Printed symbol] Terminalname
Treat
Collector
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Base
Emitter
Collector
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=
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3
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ore!
rs
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:
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a
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T
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py
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T
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bates
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—
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@
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—
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Transistor
Source
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(Chip semiconductors that are not actually used are included.)
ae
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MA7 (1/3)
[
AUDIO AMP, MOTOR DRIVE,
| MAT (2/3)
MA7 (3/3)
SYSTEM CONTROL, FUNCTION KE
[ Y/C PROCESSOR ]
[HEAD AMP ]
~- MA7 BOARD —
MA7 BOARD
DIODE
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