Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 Service Manual ▷ View online
HCD-GRX50/R770/RXD7
– 55 –
– 56 –
7-20.
SCHEMATIC DIAGRAM – PANEL Board–
•
See page 59 for Waveforms.
•
See page 66 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
(Page
58)
(Page 50)
HCD-GRX50/R770/RXD7
– 57 –
– 58 –
7-21.
PRINTED WIRING BOARD – CD SW Board –
•
See page 28 for Circuit Boards Location.
7-22.
SCHEMATIC DIAGRAM – CD SW Board –
(Page 55)
(Page 54)
HCD-GRX50/R770/RXD7
– 59 –
• Waveforms
– BD Board –
– BD Board –
1
IC101
^¶
(XTAO)
5
IC101
@§
(MDP)
2
IC101
%¡
(RF AC) (CD Play Mode)
3
IC101
$¡
(TE) (CD Play Mode)
4
IC101
#ª
(FE) (CD Play Mode)
6
IC102
!§
(RFO) (CD Play Mode)
2
IC501
!∞
(XIN)
– MAIN Board –
1
IC501
0
(XC-IN)
3.1 Vp-p
16.9344 MHz
1.2 Vp-p
0.2 Vp-p
0.5 Vp-p
2.5 Vp-p
7.8
µ
s
1.3 Vp-p
1.8 Vp-p
32.768 kHz
2.2 Vp-p
16 MHz
– PANEL Board –
1
IC601
&™
(XOUT)
4.7 Vp-p
12.5 MHz
HCD-GRX50/R770/RXD7
– 61 –
– 62 –
• Semiconductor
Location
Ref. No.
Location
D971
A-2
D972
A-1
D973
A-1
Q971
A-1
7-23.
PRINTED WIRING BOARDS – TRANSFORMER Section –
•
See page 28 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D11
B-5
D12
A-3
D13
A-3
D14
A-3
D15
A-3
D16
B-2
D17
A-2
D18
A-2
D19
A-2
D20
A-2
D21
A-2
D22
A-2
D23
A-1
IC11
B-2
Q11
B-2
Q12
A-2
Q13
A-2
Q14
A-1
Q15
A-1
Q16
A-1
Q17
A-1
(Page 43)
(Page 43)
(Page 43)
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