Sony MHC-NX300AV / STR-NX300 Service Manual ▷ View online
5
3.
DIAGRAMS
3-1.
IC PIN FUNCTION DESCRIPTION (Page 24, 25)
(STR-NX1/NX3)
•
MAIN BOARD IC501 M30622MA-A12FP (SYSTEM CONTROLLER )
Pin No.
Pin Name
I/O
Description
93
KEY1
I
Key input terminal (A/D input)
S615 to S617, S619 to S624 (TUNER BAND, STEREO/MONO, TUNER MEMORY,
GROOVE, + M, – m, ENTER, DVD 5.1CH, PRO LOGIC) keys input
(S623 DVD 5.1CH, S624 PRO LOGIC keys: used for the STR-NX3 only)
S615 to S617, S619 to S624 (TUNER BAND, STEREO/MONO, TUNER MEMORY,
GROOVE, + M, – m, ENTER, DVD 5.1CH, PRO LOGIC) keys input
(S623 DVD 5.1CH, S624 PRO LOGIC keys: used for the STR-NX3 only)
(STR-NX300)
•
MAIN BOARD IC501 M30622MA-A29FP (SYSTEM CONTROLLER )
Pin No.
Pin Name
I/O
Description
93
KEY1
I
Key input terminal (A/D input)
S615 to S624 (TUNER BAND, STEREO/MONO, TUNER MEMORY, KARAOKE PON,
GROOVE, + M, – m, ENTER, DVD 5.1CH, PRO LOGIC) keys input
S615 to S624 (TUNER BAND, STEREO/MONO, TUNER MEMORY, KARAOKE PON,
GROOVE, + M, – m, ENTER, DVD 5.1CH, PRO LOGIC) keys input
6
3-2.
PRINTED WIRING BOARD – MAIN Board –
STR-NX300
Page
STR-NX1/NX3
STR-NX300
15
!
: Difference portion.
• Abbreviation
CH
: Chinese model
HK
: Hong Kong model
MY
: Malaysia model
SP
: Singapore model
TH
: Thai model
Location C – D, 6 – 8
(MY, SP, HK, CH)
Location D – G, 2 – 5
(TH, CH)
R540
R541
CN191
10
1
(FOR TEST)
(CH)
R526
R529
(CH)
(CH)
(CH)
(CH)
#
$
%
$
@
#
7
7
STR-NX300
3-3.
SCHEMATIC DIAGRAM – MAIN Board (2/3) – (Page 13)
!
: Difference portion.
• Abbreviation
CH
: Chinese model
HK
: Hong Kong model
MY
: Malaysia model
SP
: Singapore model
TH
: Thai model
$
^
!
#
#
8
8
STR-NX300
3-4.
SCHEMATIC DIAGRAM – PA Board –
!
: Difference portion.
Page
STR-NX1/NX3
STR-NX300
3-5.
PRINTED WIRING BOARD – PANEL Board –
!
: Difference portion.
Location A – D, 9 – 12
19
!
#
Page
STR-NX1/NX3
STR-NX300
Location D – E, 1
20
Location F – G, 1 – 4
KARAOKE
PON
S618
C704
R701
R702
C723
R711
R715
C727
C721
R713
R714
C722
C724
C725
C726
R717
R721
C728
R716
C731
C729
16
9
1
8
IC702
C732
R718
C734
D701
C735
R712
@
#
^
@
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