Sony ICD-B5 Service Manual ▷ View online
5
ICD-B5
2-2. F-SW BOARD, P-SW BOARD
2-3. MAIN BOARD
1
CN701
2
case assy
4
F-SW board
5
P-SW board
3
Removal the five solders.
3
screw
4
claw
5
claw
case assy
1
Removal the two solders.
6
MAIN board
2
speaker (SP101)
6
ICD-B5
3-1. IC PIN DESCRIPTION
• IC703 µPD780308GC-A58-8EU (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1 to 3
KEY1 to 3
I
Key input
4
XHOLD
I
Hold switch input
5
AMPPOW
O
Power down control output for power amplifier IC (IC103).
6
AVREFON
O
A/D reference voltage input
7
XFMCE
O
Chip enable output for flash memory IC (IC701).
8
VDD0
—
Power supply pin
9
AVREF
—
A/D reference voltage
10
XFMWE
O
Write enable signal output for flash memory IC (IC701).
11
XFMALE
O
ALE signal output
12
VSS1
—
Ground
13
XFMR/B
I
Ready/Busy signal input from flash memory IC (IC701).
14
XFMCLE
O
CLE signal output for flash memory IC (IC701).
15, 16
NC
O
Not used. (Open)
17
XFMRE
O
Read enable signal output for flash memory IC (IC701).
18
XFMSE
O
SE signal output for flash memory IC (IC701).
19
XFMWP
O
WP signal output for flash memory IC (IC701).
20
CLKOUT
O
Not used. (Open)
21
BEEP
O
Beep signal output (2.4 kHz)
22
LIGHT
O
LCD back light control output
23 to 26
COM0 to 3
O
LCD common signal output
27
BIAS
O
Connect to VDD. (LCD bias)
28 to 30
VLC0 to 2
—
LCD drive power supply pin
31
VSS0
—
Ground
32 to 61
S0 to 29
O
LCD segment signal output
62
MGHIGH
I
Mic gain mode input (High: high mode)
63
MGTEST
O
Mic gain mode test output
64
XTEST
I
Test pin
65
DSPPOW
O
Digital signal processor registor control I/F enable signal output
66
LEDREC
O
OPR (REC) LED (D701: red) ON/OFF output
67
LEDPB
O
OPR (PLAY) LED (D701: green) ON/OFF output
68
RTCCE
O
Real time clock chip enable signal output
69
XDSPIFRQ
O
I/F request signal output for DSP IC (IC101).
70
DSPIFRW
O
I/F data read/write signal output for DSP IC (IC101).
71
XDSPRST
O
Reset signal output for A/D, D/A converter, DSP IC (IC101).
72
SI0
I
I/F data signal input for DSP IC (IC101).
73
SO0
O
I/F data signal output for DSP IC (IC101).
74
SCK0
O
I/F signal clock output for DSP IC (IC101).
75
RTCDI
I
Real time clock data input
76
RTCDO
O
Real time clock data and digital signal processor registor control data output
77
RTCCLK
O
Real time clock I/F data and digital signal processor registor control clock output
78
IC
—
Ground
79
X2
O
System clock output (5 MHz)
80
X1
—
System clock input (5 MHz)
81
VDD1
—
Power supply pin
82
XT1
—
Sub clock input (32.768 kHz)
83
XT2
—
Not used. (Open)
84
XRESET
I
Reset signal input
85
NC
—
Not used. (Open)
SECTION 3
DIAGRAMS
Ver 1.1
7
ICD-B5
Pin No.
Pin Name
I/O
Pin Description
86
WAKEUP
I
WAKE UP signal input
87
RTCINT
I
Real time clock (2 Hz) signal input
88
FLMPOW
O
Flash memory power ON/OFF output
89
DSPIFACK
I
I/F acknowledge signal input for DSP IC (IC101).
90
LMUTE
O
Line mute ON/OFF signal output
91 to 98
FM_100 to 107
I/O
Data bus signal input/output
99
AVSS
—
Ground
100
BATT
I
Power supply voltage detection input
ICD-B5
9
9
3-2. BLOCK DIAGRAM
47 MIP
46 MIN
LOUT0
23
EGPI011
EGPI014
EGPI013
EGPI015
BGPI02
EGPI014
RSTN
26
51
XOUT
52
34
XIN
25 27 58 24 54
72
SI0
90
21
5
76
75
77
77
68
87
82
9
8
65
88
84
80
1
67
66
79
LCD701
LIQUID
CRYSTAL
DISPLAY
PANEL
LED
DRIVER
Q701
18
17
7
14
11
10
19
64
86
1
2
3
4
41
42
43
2
3
4
5
91
I
98
73
SD0
74
SCK0
89
DSPIFACK
69
XDSPIFRQ
70
DSPIFRW
71
XDSPRST
18
I
21
•
24
I
27
23
I
26
32
I
61
RESET
IC702
MIC101
MIC
J101
MIC
J102
EAR
IC701
FLASH MEMORY
I/O0
I
I/O7
R/B
RE
CE
CLE
ALE
WE
WP
SL701
(TEST)
Q702
VDD
FMI00
I
FMI07
XFMSE
XFMRE
XFMCE
XFMCLE
XFMCLE
XFMALE
XFMWE
XFMWP
XFMWP
XTEST
WAKEUP
62 MGTEST
63 MGHIGH
KEY0
KEY1
KEY2
XHOLD
S703
HOLD
OFF ON
I/O
TIMER
COUNTER
CONTROL
CONTROL
OSC
INTERRUPT
CONTROL
RTCCE
RTCINT
RTCDI
RTCCLK
RTCDO
AMPPOW
BEEP
LMUTE
XT1
DSPPOW
FLMPOW
XRESET
X1
X2
LEDPB
LEDREC
COM0
I
COM3
S0
I
S29
SI
SO
SO
SCLK
CE
INTB
32KOUT
4
3
2
2
7
6
1
+3.3V
(VCC C)
D701
OPR
(GRN)(PLAY)
(RED)(REC)
A/D,D/A CONVERTER
DSP IC101
(PLUG IN POWER)
X101
4.02MHz
X701
5MHz
MEMORY
CONTROL,
SYSTEM
CONTROL
IC703
S706-708,713
S710-712,714
S704,705,709,715
KEY-IN
DETECT
Q703-705
VCC
+3.3V
(VCCB)
VCC
VCCA
+3.3V
(VCC A)
+3.3V
(VCC B)
RV101
VOL
4
8
5
1
3
2
-IN
+IN
BYPASS
VDD
VO1
VO2
SP101
SPEAKER
IC103
POWER AMP
X702
32.768kHz
REAL TIME CLOCK
IC704
VDD
+3.3V
(VCC C)
(VCC C)
+3.3V
(VCC A)
5
2
3
IC502
+3.3V REG
VOUT
VIN
OSCIN
OSCOUT
SHUTDOWN
DC-DC
CONVERTER
(3.7V)
+3.3V
(VCC B)
5
2
3
IC503
+3.3V REG
VOUT
VIN
CE
+3.3V
(VCC C)
5
2
3
IC504
+3.3V REG
VOUT
VIN
CE
IC505,Q501
VOLTAGE
DETECTOR
Q502
BUFFER
IC506
Q101
MUTE
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
2PCS,3V
KEY MATRIX
Signal path
: PB
: REC
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