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4-5. PRINTED WIRING BOARDS (DIGITAL SECTION)
4-6. SCHEMATIC DIAGRAM (DIGITAL SECTION)
Note on Printed Wiring Boards:
Note:
• X
: parts extracted from the component side.
•
¢
: internal component.
•
®
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
D502
A-3
D503
B-1
D504
B-2
D701
E-2
IC501
C-4
IC505
A-2
IC701
E-2
IC702
F-1
IC703
F-2
IC704
C-5
IC706
E-5
Q501
A-2
Q503
A-2
Q701
F-5
Q702
F-6
Q703
F-1
Ref. No.
Location
r
Semiconductor
Location
r
Refer to page 22 for IC Block Diagrams.
ICD-R100
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
U
: B+ Line.
• Power voltage is dc 3V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : REC
(
no mark : REC
(
) : PLAY
• Voltages and current are taken with a VOM (Input imped-
ance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
r
Waveforms
1
IC704
&ª
2
3
4
5
VOLT/DIV : 0.5 V AC
TIME/DIV : 50 nsec
TIME/DIV : 50 nsec
IC706
8
IC704
!∞
IC704
!§
IC704
*™
VOLT/DIV : 0.1 V AC
TIME/DIV : 10
TIME/DIV : 10
µsec
VOLT/DIV : 1 V AC
TIME/DIV : 20
TIME/DIV : 20
µsec
VOLT/DIV : 1 V AC
TIME/DIV : 20
TIME/DIV : 20
µsec
VOLT/DIV : 0.2 V AC
TIME/DIV : 10
TIME/DIV : 10
µsec
1.3 Vp-p
5 MHz
438 mVp-p
32.768 kHz
3.5 Vp-p
REC
11 kHz
PLAY 13
kHz
3.5 Vp-p
REC
11 kHz
PLAY 13
kHz
0.8 Vp-p
32.768 kHz
K9F2808UOM-YCBOT
1
2
3
4
5
6
A
B
C
D
E
F
G
A
MAIN BOARD
CN703
(Page 11)
11
(11)
S703
R742
CN705
IC706
IC501
C702
S704
C701
X701
Q701
IC704
R703
C708
R704
C721
R734
JC702
R501
C501
C711
R738
C704
C504
R741
JC701
S701
S711
R502
R740
C712
R723
R745
FB703
R730
C726
C727
R739
X702
Q702
1
5
6
10
1
5
10
15
20
25 26
30
35
40
45
50
1
5
10
15
20
25
26
30
35
40
45
50
51
55
60
65
70
75
76 80
85
90
95
100
[DIGITAL BOARD] (SIDE B)
CN702
D503
D504
R744
IC505
D502
R503
R513
IC701
Q501
C715
IC702
R715
IC703
R720
Q503
Q703
D701
BP701
R728
R507
R711
R712
CN704
R713
S702
S712
R729
R721
R737
R731
R719
C709
R701
R508
R505
R722
R714
R747
FB702
R702
R766
1
3
2
1
6
1
5
10
15
20
24
25
30
35
40
45 48
1
3
4
5
1
3
4
5
LCD BACK LIGHT
1
5
10
15
20
25
30
34
[DIGITAL BOARD] (SIDE A)
2
2
02
LCD101
LIQUID CRYSTAL DISPLAY
11
(11)
1-673-292-
1-673-292-
OPR
SWITCH UNIT
DISPLAY MENU STOP
” PLAY/STOP
=
REVIEW/– +
CUE/+
D502
S703
INDEX
S701
r REC/STOP
S711
P PAUSE
S702
FILE
S712
HOLD
ON
OFF
S704
ERASE
Ver 1.4
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