Sony CDX-GT28M Service Manual ▷ View online
CDX-GT28M
25
IC401 BD3447AFV-E2 (MAIN Board (2/3))
21
22
29
30
23
24
40
FIL
GND
SDA
SCL
OUT-FR
OUT-FL
OUT-RR
OUT-RL
SUB-R
SUB-L
SAOUT
SADA
MIN1
MIN2
EBIAS2
DS2-R
DS1-R
DS3-R
SACLK
39
38
37
VCC
36
27
28
25
26
31
32
33
34
35
20
19
12
11
18
17
1
BUS-R
BUS-L
TU-R
TU-L
CD-L
AUX-R
AUX-G
AUX-L
PD-R
PD-G
PD-L
FP1
FN2
FP2
EBIAS1
DS2-L
DS1-R
DS3-R
FN1
2
3
4
CD-R
5
14
13
16
15
10
9
8
7
6
I2C BUS
LOGIC,
VCO
FADER
FADER
FADER
HPF
LPF
GND
ISO AMP
GND
ISO AMP
180o/0o
3 BAND P-EQ (TONE CONTROL)
7 BAND
SPECTRUM ANALYZER
/LEVEL METER
EFFECT
VOLUME/MUTE
INPUT GAIN
INPUT SELECTOR (3 SIGLE-END AND 3 STEREO IS O)
FADER
FADER
SPEANA
LVL METER
LVL METER
SPEANA
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
CDX-GT28M
26
• IC Pin Function Description
MAIN BOARD IC501 R5F3640DDA07FA (SYSTEM CONTROL)
MAIN BOARD IC501 R5F3640DDA07FA (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
LCD SO
O
Liquid crystal display panel serial data signal output
2
LCD CKO
O
Liquid crystal display panel serial clock signal output
3
NOSE SW
I
Panel detection signal input
4
SIRCS
I
Remote control signal input
5
UNISO
O
SONY BUS serial data signal output
6
UNISI
I
SONY BUS serial data signal input
7
UNISCK
O
SONY BUS serial clock signal output
8
BYTE
I
Connect to ground. (Pull down)
9
CNVSS
I
Flash write signal input Normally operation: “L”, Flash write: “H”
10
XIN
I
Low speed operation clock signal input (32.768kHz)
11
XOUT
O
Low speed operation clock signal output (32.768kHz)
12
RESET
I
Reset signal input
13
OSCOUT
O
High speed operation clock signal output (11.06MHz)
14
VSS
—
Ground pin
15
OSCIN
I
High speed operation clock signal input (11.06MHz)
16
VCC1
—
Power supply pin (+3.3V)
17
NMI
I
External pull up pin (fi xed at “H”.)
18
DAVN
I
RDS data block cycle detection signal input Not used.
19
BUIN
I
Back up power supply detection signal input
20
CDM ON
I
CD mechanism deck power supply control request signal input
21
Z MUTE
I
Mute signal input
22 to 27
NCO
O
Not used. (Open)
28
BEEP
O
Beep signal output to power amplifi er
29
I2C SCK
O
I2C serial clock signal output
30
I2C SIO
I/O
I2C serial data signal input/output
31
FW TXD
O
Flash write interface serial data signal output
32
FW RXD
I
Flash write interface serial data signal input
33
FW CLK
I
Flash write interface serial clock signal input
34
FW BUSY
O
Flash write interface serial busy signal output
35 to 40
NCO
O
Not used. (Open)
41
EPM
O
EPM signal output (fi xed at “L”.)
42
RCIN1
I
Rotary commander shift key signal input
43
SYSRST
O
System reset signal output
44
BUSON
O
BUS ON signal output
45
NCO
O
Not used. (Open)
46
CE
O
CE signal output (fi xed at “L”.)
47 to 51
NCO
O
Not used. (Open)
52
CD ON
I
CD mechanism servo power supply control request signal input
53
TESTIN
I
Test mode detection signal input Not used.
54
TELATT
I
Telephone attenuate detection signal input Not used.
55
ACC IN
I
Accessory power supply detection signal input
56
ATT
O
Audio mute control signal output
57
DIAG
I
Condition signal input from power amplifi er IC
58
AMPSTB
O
Standby signal output to power regulator IC
59
VOLATT
O
Electrical volume attenuate control signal output Not used.
60
NCO
O
Not used. (Open)
61
CODEC SEL
I
CODEC setting signal input
62
VCC2
—
Power supply pin (+3.3V)
63
COL SEL
I
COL setting signal input
64
VSS
—
Ground pin
65
ILLUMI SEL
I
Illumination voltage setting signal input for panel “H”: 10.4V, “L”: 9V
66
DEMO SEL
I
DEMO setting signal input “H”: DEMO on, “L”: DEMO off
67
DIM SEL
I
Dimmer function setting signal input “H”: Dimmer
68
B OUT SEL
I
Black out setting signal input “H”: Block out
CDX-GT28M
27
Pin No.
Pin Name
I/O
Description
69
AREASEL 3
I
Destination setting pin 3
70
AREASEL 2
I
Destination setting pin 2
71
AREASEL 1
I
Destination setting pin 1
72
AREASEL 0
I
Destination setting pin 0
73 to 80
NCO
O
Not used. (Open)
81
RE IN1
I
Rotary encoder signal input 1
82
RE IN0
I
Rotary encoder signal input 0
83
SAIN
I
Spectrum analyzer signal input Not used. (Open)
84
CYRIL SEL
I
Cyril correspondence discrimination signal input
“H”: Correspondence, “L”: No correspondence
“H”: Correspondence, “L”: No correspondence
85
TUATT
O
Tuner mute control signal output Not used. (Open)
86
NCO
O
Not used. (Open)
87
RDS ON
O
RDS IC power supply control signal output Not used. (Open)
88
NCO
O
Not used. (Open)
89
SADATA
O
Spectrum analyzer data signal output Not used. (Open)
90
SACLK
O
Spectrum analyzer clock signal output Not used. (Open)
91
KEYACK0
I
Key Acknowledge detection signal input (Rotary command signal input)
92
KEYACK1
I
Key Acknowledge detection signal input (Front panel signal input)
93
VSM
I
S meter voltage detection signal input
94
KEYIN1
I
Key signal input 1
95
KEYIN0
I
Key signal input 0
96
AVSS
—
Ground pin for A/D converter
97
RC IN0
I
Rotary commander key signal input
98
AVRH
—
A/D converter external reference power supply pin (+3.3V)
99
AVDD
—
A/D converter power supply pin (+3.3V)
100
LCD CE
O
Liquid crystal display panel chip enable signal output
28
CDX-GT28M
SECTION 5
EXPLODED VIEWS
1
X-2318-605-1 PANEL
ASSY,
SUB
2
2-583-939-01 SCREW (+B 2X4)
3
X-2179-691-1 LOCK
ASSY
4
2-348-996-01 SCREW (+PTT 2.6X6), GROUND POINT
5
A-1553-701-A MAIN BOARD, COMPLETE
6
1-833-762-11 CONNECTION
CORD
FOR
AUTOMOBILE
(POWER) (for Gasoline Car)
6
1-834-307-11 CONNECTION
CORD
FOR
AUTOMOBILE
(POWER) (for Diesel Car)
FU601
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-790-01 SCREW +PTT 2.6X4 (S)
#3
7-685-793-09 SCREW +PTT 2.6X8 (S)
#4
7-685-794-09 SCREW +PTT 2.6X10 (S)
#5
7-685-134-19 SCREW +P 2.6X8 TYPE2 NON-SLIT
#6
7-621-284-40 SCREW +P 2.6X10
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-1. MAIN
SECTION
Note:
• -XX and -X mean standardized parts, so
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Items marked “*” are not stocked since
they are seldom required for routine ser-
vice. Some delay should be anticipated
when ordering these items.
vice. Some delay should be anticipated
when ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
plied.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet’s Color
• Accessories are given in the last of this
parts list.
The components identifi ed by mark
0
or dotted line with mark
0 are critical for
safety.
Replace only with part number specifi ed.
Replace only with part number specifi ed.
not supplied
not supplied
FU601
not supplied
front panel section
not supplied
not supplied
#1
#1
#1
#3
#4
#4
#6
#5
#3
#2
#1
MG-101L-188//C
"
#
#
1
2
3
4
6
"
5
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