Tuner Section (East European, Cis Model); Cd Section; Display Section - Sony HCD-GRX8 Service Manual

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THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
¢
• : internal component.
• C : panel designation.
Note: The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal pro-
duction tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
g : VIDEO/MD
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
c : digital out
• Abbreviation
G : German model.
E2 : Without SW tuner E model.
E3 : With SW tuner E model.
EA3 : Saudi Arabia model.
EA4 : Israeli model.
EE : East European model.
AUS : Australian model.
SP : Singapore model.
MY : Malaysia model.
HK : Hong Kong model.
TW : Taiwan model.
AR : Argentine model.
IA : Indonesian model.
TH : Thai model.
MX : Mexican model.
SAF : South African model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
•
p : parts mounted on the conductor side.
®
• : Through hole.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
WAVEFORMS
– CD SECTION –
1
1.3Vp-p
500mV/DIV, 500nsec/DIV
IC101 #£ RFO
2
0.5Vp-p
200mV/DIV, 1µsec/DIV
IC101 2 FEI
3
0.2Vp-p
50mV/DIV, 1msec/DIV
IC101 $¶ TEI
4
7.8µsec
2.5Vp-p
IC103 @¶ MDP
5
230µsec
5Vp-p
IC103 ^º XPCK
6
135µsec
5Vp-p
IC103 ^™ RFCK
7
135µsec
5Vp-p
IC103 &¢ WFCK
8
2.6Vp-p
16.9344MHz
IC103 *ª XTAI
– 35 –
– TUNER SECTION –
(AEP, UK, German model)
1
4.2Vp-p
4.5MHz
IC21 @¢ XOUT
2
2Vp-p
4.332MHz
IC1752 !¢ OEC O
– TUNER SECTION –
(East European, CIS model)
1
4.2Vp-p
4.5MHz
IC21 @¢ XOUT
– MAIN SECTION –
1
5.5Vp-p
5MHz
IC501 0 X2
2
5Vp-p
32.768kHz
IC501 !£ XT2
– DISPLAY SECTION –
1
4Vp-p
8MHz
IC601 8 X-OUT
2
4.3Vp-p
8MHz
IC801 2 X-OUT
3
3.6Vp-p
4.09MHz
IC851 2 TX
– 36 –