Sony HCD-EC68P Service Manual - Page 39

PRINTED, WIRING, BOARD, MOTOR Board EC68P/EC78P: US, Canadian models, 18. SCHEMATIC, DIAGRAM

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6-17. PRINTED WIRING BOARD - MOTOR Board (EC68P/EC78P: US, Canadian models) - • See page 27 for Circuit Boards Location. • : Uses unleaded solder. 1 2 3 4 5 6 7 A MOTOR BOARD Q CN001 PANEL BOARD CN311 (Page 36) B M M001 (LOADING) S001 DISC TRAY OPEN/CLOSE DETECT OPEN 5CLOSE 21 1-866-548- (21) • Waveforms - CD Board -  IC101 JB (RFi) (CD play mode) - MAIN Board - XB IC801 RM (XIN) HCD-EC68P/EC78P - PANEL Board - FB IC301 RG (X1A) 0.5 to 1.3 Vp-p 200 mV/DIV, 500 ns/DIV  IC101 XG (XO) (CD play mode) 1 Vp-p 13.3 μs 500 mV/DIV, 5 μs/DIV 3 Vp-p 30.5 μs 1 V/DIV, 10 μs/DIV FT IC301 PT (X1) 3.3 Vp-p 59.1 ns 1 V/DIV, 20 ns/DIV 3 Vp-p 166 ns 1 V/DIV, 50 ns/DIV 6-18. SCHEMATIC DIAGRAM - MOTOR Board (EC68P/EC78P: US, Canadian models) - M001 (LOADING) S001 CD TRAY OPEN/CLOSE DETECT CLOSE OPEN OPEN CLOSE DGND CLOSE SW OPEN SW CN001 5P Q PANEL BOARD CN311 (Page 37) HCD-EC68P/EC78P 39 39

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HCD-EC68P/EC78P
HCD-EC68P/EC78P
39
39
M001
CN001
S001
5P
OPEN SW
CLOSE SW
OPEN
CLOSE
(LOADING)
DGND
CLOSE
OPEN
CD TRAY
OPEN/CLOSE
DETECT
PANEL
BOARD
CN311
Q
CN001
S001
A
B
1
2
3
4
5
6
7
1-866-548-
21
(21)
MOTOR BOARD
Q
PANEL BOARD
CN311
DISC TRAY
OPEN/CLOSE
DETECT
OPEN
CLOSE
M
M001
(LOADING)
(Page 37)
6-17. PRINTED
WIRING
BOARD
- MOTOR Board (EC68P/EC78P: US, Canadian models) -
6-18. SCHEMATIC
DIAGRAM
- MOTOR Board (EC68P/EC78P: US, Canadian models) -
•
: Uses unleaded solder.
• See page 27 for Circuit Boards Location.
• Waveforms
– CD Board –
IC101
(XO)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.1 ns
3.3 Vp-p
IC101
(RFi)
(CD play mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p
IC801
(XIN)
500 mV/DIV, 5
μ
s/DIV
13.3
μ
s
1 Vp-p
– MAIN Board –
IC301
(X1)
1 V/DIV, 50 ns/DIV
166 ns
3 Vp-p
IC301
(X1A)
1 V/DIV, 10
μ
s/DIV
30.5
μ
s
3 Vp-p
– PANEL Board –
(Page 36)