Read Sony SPK-DVF Service Manual online
LS-49 (LANC CONTROL) SCHEMATIC DIAGRAM
SPK-DVF
– 5 –
– 6 –
LANC CONTROL
LS-49
When indicating parts by reference
number, please include the board
name.
number, please include the board
name.
(For schematic diagrams)
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F. 50 V
or less are not indicated except for electrolytics and tantalums.
• Chip resistors are 1/10 W unless otherwise noted.
k
Ω
= 1000
Ω
, M
Ω
= 1000 k
Ω
• Caution when replacing chip parts.
New parts must bo attached after removal of chip. Be careful
not to heat the minus side of tantalum capacitor, Because it is
damaged by the heat.
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
C 541
L 452
22U
10UH
TA
A
2520
Kinds of
Temperature
External
capacitor characteristics
dimensions (mm)
•
C
: panel designation.
•
U
: B+ Line.
•
¢
: internal component.
• Power voltage is dc 6 V and fed with regulated dc power sup-
ply from CN001 pin
1
.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production tol-
erances.
erances.
n
n
n
B+
B+
B+
B+
B+
B+
B+
• Microphone block is replaced as block, so that printed
wiring board and schematic diagram is omitted.
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