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A
SCHEMATIC DIAGRAMS-7
DISPLAY SECTION
1
APPLY MODELS & CODE
CODE
MODEL
T3
TX-SR303
H3
HT-R330
T4
TX-SR403 / TX-SR8340
H4
HT-R430
T5
TX-SR503/503E / TX-SR8350
A5
TX-SA503
H5
HT-R530
T6
TX-SR603 / TX-SR8360
A6
TX-SA603
2
NAETC-8516
PHONES
P891
U04
HEADPHONE JACK
PC BOARD
3
Refer to following table about the
R822
NC
parts displayed by mark "
D822
NC
DESTINATION
DD, DC
Q822
Q824
OTHER
NC
RN1402
R832
R833
4
470
560
NC
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.
5
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.
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
U03
SWITCH PC BOARD
".
CIRCUIT NO. Q824, D824,
S802
R825, 826
NO
NO
YES
YES
R834
R835
R836
820
1.2K
2.2K
NC
NC
NC
!
ARE CRITICAL FOR SAFETY
) ARE IN uF/WV.
PRINTING SIDE
NASW-8515
+BLED
7
LEDPURE
6
LEDZONE2
5
GNDLED
4
KEY0_2
3
KEYINT0
2
1
JL831B
3
2
GNDTACT
1
JL832B
NC
IS DC VOLTAGE.(NO INPUT SIGNAL).
C
NADIS-8513
U01
DISPLAY PC BOARD
T6, A6 ONLY
Q823
RN2402
VOLUME
D823
7
+BLED
6
LEDPURE
5
LEDZONE2
4
3
KEY0_2
2
KEYINT0
1
JL831A
3
2
1
JL832A
NC
HT-R530
D
Q801
FL TUBE
16BT127GNK
49
SEG2
50
SEG1
SEG19
S
51
SEG0
S
52
VCC2
S
53
DIG15/SEG39
S
54
DIG14/SEG38
S
55
DIG13/SEG37
S
56
Q802
DIG12/SEG36
S
57
DIG11
M66005
58
DIG10
S
59
DIG9
S
60
DIG8
S
61
DIG7
S
62
DIG6
S
63
DIG4
DIG5
S
64
S
C806
101J
R802 3.3K
101J
C807
R803 3.3K
101J
C808
220
R804
101J
C809
R805
220
R831
330
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