Read Sony ICF-C717PJ Service Manual online
ICF-C717PJ
ICF-C717PJ
11
11
SECTION 4
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
•
C : Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
•
A : B+ Line.
• Power voltage is dc 8 V and fed with regurated dc power
supply from T201 and T201A on the MAIN board, and
power voltage is dc 3 V and fed with regurated dc power
supply from BAT1 and BAT2 on the LCD board.
power voltage is dc 3 V and fed with regurated dc power
supply from BAT1 and BAT2 on the LCD board.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TUNER
• Voltages are taken with VOM (Input impedance 10 M
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
TUNER
f
: NATURE SOUND
i : AUDIO IN
For Printed Wiring Boards.
Note:
•
•
X : Parts extracted from the component side.
•
Y : Parts extracted from the conductor side.
•
W : Indicates side identifi ed with part number.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note: The components identifi ed by mark
0 or dotted
line with mark
0 are critical for safety.
Replace only with part number specifi ed.
• Waveforms
– MAIN Board –
– LCD Board –
• Circuit Boards Location
1
IC801
ql (RCLK)
200 mV/DIV, 10
Ps/DIV
30.4
Ps
0.7 Vp-p
qa
IC101
qg (XT2)
1 V/DIV, 10
Ps/DIV
30.4
Ps
2.4 Vp-p
qs
IC101
qk (X2)
1 V/DIV, 100 ns/DIV
240 ns
2.5 Vp-p
TOP KEY board
REAR KEY board
LCD board
PROJ board
MAIN board
LED board
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