Sony SRS-Z750, Руководство по обслуживанию

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SRS-Z750/Z750PC
– 5 – – 6 –
1
RIPPLE FILTER/
STARTING TIME
2 IN1
3 PRE GND
4
IN2
5 STANDBY
SIGNAL MUTE 6
VCC1 7
VCC2 8
–OUT2
+OUT2 9
POWER GND1
POWER GND2 10
+OUT1
–OUT1
11
12
13
14
+
–
+
–
INPUT
AMP
INPUT
AMP
OUTPUT
AMP
OUTPUT
AMP
IC1 LA4663
• IC Block Diagram
2-3. PRINTED WIRING BOARD (SRS-Z750PC) 2-4. SCHEMATIC DIAGRAM (SRS-Z750PC)
• Semiconductor
Location
Ref. No. Location
D1 D-2
D2 D-2
D3 F-2
IC1 D-2
IC2 E-3
Q1 D-3
Q2 D-3
Note:
• X : parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
b
: Pattern from the side which enables seeing.
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
• C : panel designation.
•
U
: B+ Line.
• Power voltage is dc 15 V and fed with regulated dc power
supply from external power voltage jack.
• Voltage is dc with respect to ground under no-signal
condition.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F : AUDIO