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A
SCHEMATIC DIAGRAMS-7
DISPLAY SECTION
1
NAETC-8516
2
PHONES
P891
U04
HEADPHONE JACK
PC BOARD
3
Q822
Q824
NC
NC
R832
R833
4
470
560
5
B
R891
NC
R892
NC
JL891A
1
5
2
4
3
L891 022M
2
4
3
5
7
L892 022M
8
L893 022M
1
R893
NC
NC
U03
SWITCH PC BOARD
R834
R835
R836
820
1.2K
2.2K
C
NADIS-8513
NASW-8515
+BLED
7
7
+BLED
LEDPURE
6
6
LEDPURE
LEDZONE2
5
5
LEDZONE2
NC
GNDLED
4
4
KEY0_2
3
3
KEY0_2
KEYINT0
2
2
KEYINT0
1
1
JL831B
JL831A
NC
NC
3
3
2
2
GNDTACT
1
1
JL832B
JL832A
NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER)
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS (
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX)
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
<Note>
NC=No mount of parts.
Refer to following table about the parts displayed by mark "
HT-R330
D
U01
DISPLAY PC BOARD
49
SEG2
50
SEG1
51
SEG0
+5V
52
VCC2
53
DIG15/SEG39
54
DIG14/SEG38
55
DIG13/SEG37
56
DIG12/SEG36
57
DIG11
58
DIG10
59
DIG9
60
DIG8
61
DIG7
62
DIG6
63
DIG4
DIG5
64
C806
101J
101J
C807
101J
C808
101J
C809
Q823
NC
D823
NC
R831
330
!
ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.
PRINTING SIDE
".
Q801
FL TUBE
16BT127GNK
SEG19
S
S
S
S
S
S
Q802
S
M66005
S
S
S
S
S
S
S
R802 3.3K
R803 3.3K
220
R804
R805
220
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