Design and specifications are subject to change without notice.
IC RECORDER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
1
Page 2
ICD-B5
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
UNLEADED SOLDER
•
Boards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
TABLE OF CONTENTS
1. GENERAL
Index to Parts and Controls ..................................................... 3
2. DISASSEMBLY
2-1. Upper Lid Assy ................................................................... 4
3-7. IC Block Diagrams............................................................ 14
4. EXPLODED VIEWS
4-1. Case Section ...................................................................... 15
4-2. Main Board Section .......................................................... 16
5. ELECTRICAL PARTS LIST......................................... 17
2
Page 3
SECTION 1
GENERAL
Index to Parts and Controls
Main unit
MIC jack
(PLUG IN POWER)
(built-in microphone)
MIC
EAR (earphone) jack
OPR (operation) indicator
ICD-B5
This section is extracted
from instruction manual.
Rear
Display window
FOLDER
INDEX
DISPLAY
MIC SENSE
(microphone sensitivity)
MENU
ERASE
Speaker
STOP
Battery
compartment
Hook for handstrap
(not supplied)
Display window
Folder indication
Alarm indicator
Repeat play indicator
Microphone sensitivity
indication
REC DATE (recorded date)
indication
REMAIN indicator
Counter /Remaining time indication /Recording date
indication /Current time indication (15:30, etc.) /Menu
indication (ALARM, BEEP, etc.) /Messages (ERASE, HOLD,
etc.)
zREC (record) /STOP
X PAUSE
— .REVIEW/
>+CUE
NxPLAY/STOP•
EXECUTE
HOLD
VOL (volume)
Selected message
number/Mode
indication of the
menu (ON, OFF, etc.)
REC (recording)
indicator
Remaining battery
indicator
Remaining memory
indicator
3
Page 4
ICD-B5
y
SECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
SET
2-1.UPPER LID ASSY
(Page 4)
2-2.F-SW BOARD,
P-SW BOARD
(Page 5)
2-3.MAIN BOARD
(Page 5)
Note : Follow the disassembly procedure in the numerical order given.
2-1. UPPER LID ASSY
8
speaker (SP101)
7
screws 1.7x2.5
3
claws
claw
6
9
upper lid assy
5
case ass
claws
1
2
B 1.7x7
4
claw
B 1.7x10
4
Page 5
2-2. F-SW BOARD, P-SW BOARD
d
w
4
F-SW board
5
P-SW boar
ICD-B5
2-3. MAIN BOARD
2
speaker (SP101)
2
1
CN701
3
Removal the five solders.
case assy
3
scre
1
Removal the two solders.
6
MAIN board
4
claw
case assy
5
claw
5
Page 6
ICD-B5
SECTION 3
DIAGRAMS
3-1. IC PIN DESCRIPTION
• IC703 µPD780308GC-A57-8EU (SYSTEM CONTROL)
Pin No.Pin NameI/OPin Description
1 to 3KEY1 to 3IKey input
4XHOLDIHold switch input
5AMPPOWOPower down control output for power amplifier IC (IC103).
6AVREFONOA/D reference voltage input
7XFMCEOChip enable output for flash memory IC (IC701).
8VDD0—Power supply pin
9AVREF—A/D reference voltage
10XFMWEOWrite enable signal output for flash memory IC (IC701).
11XFMALEOALE signal output
12VSS1—Ground
13XFMR/BIReady/Busy signal input from flash memory IC (IC701).
14XFMCLEOCLE signal output for flash memory IC (IC701).
15, 16NCONot used. (Open)
17XFMREORead enable signal output for flash memory IC (IC701).
18XFMSEOSE signal output for flash memory IC (IC701).
19XFMWPOWP signal output for flash memory IC (IC701).
20CLKOUTONot used. (Open)
21BEEPOBeep signal output (2.4 kHz)
22LIGHTOLCD back light control output
23 to 26COM0 to 3OLCD common signal output
27BIASOConnect to VDD. (LCD bias)
28 to 30VLC0 to 2—LCD drive power supply pin
31VSS0—Ground
32 to 61S0 to 29OLCD segment signal output
62MGHIGHIMic gain mode input (High: high mode)
63MGTESTOMic gain mode test output
64XTESTITest pin
65DSPPOWODigital signal processor registor control I/F enable signal output
66LEDRECOOPR (REC) LED (D701: red) ON/OFF output
67LEDPBOOPR (PLAY) LED (D701: green) ON/OFF output
68RTCCEOReal time clock chip enable signal output
69XDSPIFRQOI/F request signal output for DSP IC (IC101).
70DSPIFRWOI/F data read/write signal output for DSP IC (IC101).
71XDSPRSTOReset signal output for A/D, D/A converter, DSP IC (IC101).
72SI0II/F data signal input for DSP IC (IC101).
73SO0OI/F data signal output for DSP IC (IC101).
74SCK0OI/F signal clock output for DSP IC (IC101).
75RTCDIIReal time clock data input
76RTCDOOReal time clock data and digital signal processor registor control data output
77RTCCLKOReal time clock I/F data and digital signal processor registor control clock output
78IC—Ground
79X2OSystem clock output (5 MHz)
80X1—System clock input (5 MHz)
81VDD1—Power supply pin
82XT1—Sub clock input (32.768 kHz)
83XT2—Not used. (Open)
84XRESETIReset signal input
85NC—Not used. (Open)
6
Page 7
Pin No.Pin NameI/OPin Description
86WAKEUPIWAKE UP signal input
87RTCINTIReal time clock (2 Hz) signal input
88FLMPOWOFlash memory power ON/OFF output
89DSPIFACKII/F acknowledge signal input for DSP IC (IC101).
90LMUTEOLine mute ON/OFF signal output
91 to 98FM_100 to 107I/OData bus signal input/output
99AVSS—Ground
100BATTIPower supply voltage detection input
ICD-B5
7
Page 8
ICD-B5
MEMO
8
Page 9
3-2. BLOCK DIAGRAM
A/D,D/A CONVERTER
DSP IC101
ICD-B5
MIC101
MIC
J101
MIC
(PLUG IN POWER)
KEY MATRIX
S706-708,713
S710-712,714
S704,705,709,715
Signal path
: PB
: REC
+3.3V
(VCCB)
VCC
18
I
21
•
24
I
27
IC701
FLASH MEMORY
I/O0
I
I/O7
KEY-IN
DETECT
Q703-705
R/B
CLE
ALE
WE
WP
IC103
POWER AMP
LOUT0
XOUT
X101
4.02MHz
VDD
52
X701
5MHz
XIN
34
4
3
2
7
6
1
SI
SO
SCLK
CE
INTB
32KOUT
VCCA+3.3V
(VCC A)
VCC
+3.3V
(VCC B)
I/O
LCD701
LIQUID
CRYSTAL
DISPLAY
PANEL
LED
DRIVER
Q701
REAL TIME CLOCK
TIMER
COUNTER
CONTROL
INTERRUPT
CONTROL
IC704
IC702
1
RESET
+3.3V
(VCC C)
OSCIN
OSC
OSCOUT
D701
OPR
(GRN)(PLAY)
(RED)(REC)
32.768kHz
9
8
VDD
RV101
VOL
X702
+3.3V
(VCC C)
Q101
MUTE
+3.3V
(VCC A)
+3.3V
(VCC B)
+3.3V
(VCC C)
-IN
4
+IN
3
2
BYPASS
IC502
+3.3V REG
52
VOUT VIN
SHUTDOWN
3
IC503
+3.3V REG
52
VOUT VIN
CE
3
IC504
+3.3V REG
52
VOUT VIN
CE
3
BUFFER
Q502
1
VO2
VO1
VDD
IC505,Q501
DC-DC
CONVERTER
(3.7V)
IC506
VOLTAGE
DETECTOR
8
5
MIP
47
MIN
46
EGPI011
EGPI014
EGPI013
EGPI015
BGPI02
EGPI014
69
70
DSPIFACK
XDSPIFRQ
RSTN
71
DSPIFRW
XDSPRST
AMPPOW
LMUTE
BEEP
RTCDO
RTCDI
RTCCLK
RTCCE
RTCINT
XT1
DSPPOW
FLMPOW
XRESET
COM0
I
COM3
S0
I
S29
LEDPB
LEDREC
90
21
5
76
75
77
68
87
82
65
88
84
X1
80
79
X2
23
I
26
32
I
61
67
66
23
2651
25 27 58 24 54
72
73
74
89
SI0
SD0
SCK0
FMI00
91
I
I
98
FMI07
41
RE
42
43
CE
2
3
4
5
SL701
(TEST)
Q702
S703
HOLD
OFF ON
18
17
7
14
11
10
19
64
86
63
62
1
2
3
4
XFMSE
XFMRE
XFMCE
XFMCLE
XFMALE
XFMWE
XFMWP
XTEST
WAKEUP
MGHIGH
MGTEST
KEY0
KEY1
KEY2
XHOLD
MEMORY
CONTROL,
SYSTEM
CONTROL
IC703
SP101
SPEAKER
J102
EAR
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
2PCS,3V
99
Page 10
ICD-B5
3-3. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 14 for Common Note on Schematic Diagrams, Waveforms and IC Block Diagrams.
IC B/D
MIC101
J101
R701
FB101
FB102
TP101
TP110
IC701
C101
R103
R102
R101
R104
C103 C104
C105
C106
R702
R703
TP108
C114
R136
C110
RV101
R105 C109
R704
R705
C701
C131
C119 C120
IC702
C128
TP102
R135
C129
C702
X101
R114 R113
C730
R116
R110
Q101
3LNOIS-TL
C116 R115
TP746
R111
C115
R112
R709
C127
IC101
X701
R130
R131
R132
R134
R133
C126C107
R708 IC704
R725
R724
C705
C706
R723
R129
R128
R127
R126
R121
IC B/D
AGP100
R122
R123
R124
R125
X702
C707
D702
C708
TP107
IC103
TP104
TP504
C505
J102
10V
SP101
IC506
IC505
R508R506
R507
C509
C508R505
D501
TP502
L501
Q501
TP105
C510C502
C125
TP501
TP106
TP508
R117C121
LCD701
FB103
FB104
R502
R503
R504
Q502
C507R501
TP506TP505TP507
IC504IC503IC502
C504
R119
C132
100p
TP503
R120C123
R729
Q702
R730
R731
Q703Q704
R732
R733
C715
Q705
R756
R758R736R734
R760
C714
R706
TP703
R707
TP704
TP707
C703
C704
C728C712C711
R710
R757
TP708
TP706
MEMORY CONTROL,SYSTEM CONTROL
R712
R713
R711
TP705
IC703
A57-8EU
MGTEST
MGHIGH
R761
R715
R719
R714
R755
0
TP702
TP701
TP745
R741
Q701
D701
TP751
W716
R750R749R748 R752R751
S711S712 S714S710S713
CN701
R727R726
SL701
CN501
TP747
TP744
TP749
TP748
TP741
TP743
TP742
R746 R747R743R753R744 R745R742
S705S704 S715S709S708 S707S706
S703
TP755
TP752
TP753
TP754
W711
W712
W714
W713
W706
W701
W702
W704
W703
1010
Page 11
3-4. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 14 for Common Note on Printed Wiring Boards. : Uses unleaded solder.
3-5. PRINTED WIRING BOARD — F-SW SECTION — • Refer to page 14 for Common Note on Printed Wiring Boards.
A
B
C
1
MAIN
BOARD
CN701
(Page 11)
1
2345678910
F-SW BOARD (SIDE A
TP741
610
TP742
CN501
TP748
15
TP747
TP744
TP749
R743
)
R753
TP743
R744
R747
R745
R742
D
: Uses unleaded solder.
E
F
G
H
I
F-SW BOARD (SIDE B
MIC SENS
S715S706S705
ERASE
S709
1-685-024- 11
)
DISPLAY
S707
MENUSTOP
S704S708
INDEX
R746
DRY BATTERY
(IEC DESIGNATION LR03)
FOLDER
1-685-024- 11
SIZE "AAA"
2PCS, 3V
W703
W704
W702
W701
W706
J
2
P-SW
BOARD
(Page 13)
1212
Page 13
ICD-B5
3-6. PRINTED WIRING BOARD — P-SW SECTION — • Refer to page 14 for Common Note on Printed Wiring Boards.
1
234567891011121314
A
B
C
D
P-SW BOARD (SIDE A
TP755
W713
W714
W712
2
F-SW
BOARD
(Page 12)
P-SW BOARD (SIDE B
TP754
W711
)
W716
)
TP753
TP751TP752
R752
R748
(SELECT)
: Uses unleaded solder.
R749R750R751
1-685-025-11
PAUSEREC/STOP
E
F
S703
HOLD
OFF ON
B • x PUSH B
.>
S714
S710
PLAY/STOP
(ENTER)
S712
X
S713
S711
1-685-025-
11
1313
Page 14
ICD-B5
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
Common Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
f
•
: internal component.
4
W or less unless otherwise
• C : panel designation.
• A : B+ Line.
•Power voltage is dc 3V and fed with regulated dc power
supply from battery terminal.
•Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : PB
(): REC
•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E: PB
a : REC
• Waveforms
0.5V/div 0.1µsec/div
1
4.02MHz
IC101 ta (XOUT)
1.0V/div 10µsec/div
2
32.768kHz
IC704 1 (32KOUT)
0.5V/div 10µsec/div
3
32.768kHz
IC704 8 (OSCOUT)
1.0V/div 0.2µsec/div
4
5MHz
IC703 ul (X2)
1.0Vp-p
2.2Vp-p
1.2Vp-p
3.2Vp-p
3-7. IC BLOCK DIAGRAMS
IC103 LM4890MMX
SHUTDOWN
1
BYPASS
+IN
-IN
BIAS
2
3
4
IC704 RS5C348A-E2
8
VO2
7
GND
VDD
6
5
VO1
Common Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
f
•
: internal component.
•: Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from
(SIDE B)the pattern face are indicated.
Parts face side:Parts on the parts face side seen from
(SIDE A)the parts face are indicated.
• Lead Layouts
Lead layout of conventional IC
32KOUT
SCLK
VSS
1
2
SO
3
4
SI
5
32 kHz
OUTPUT
CONTROL
I/O
CONTROL
COMPARATOR
COMPARATOR
ADDRESS
REGISTER
SHIFT
REGISTER
ALARM W REGISTER
ADDRESS
DECODER
INTERRUPT
CONTROL
VOLTAGE
DETECT
(WEEK, MIN, HOUR)
ALARM D REGISTER
W
D
TIMER COUNTER
SEC, MIN, HOUR, WEEK,
DAY, MONTH, YEAR
(MIN, HOUR)
DIV
DIVIDER
CORRECTION
OSC
DETECT
OSC
VDD
10
9
8
7
6
VDD
OSCIN
OSCOUT
CE
INTR
1414
Page 15
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
4-1. CASE SECTION
SECTION 4
EXPLODED VIEWS
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
R
Parts Color Cabinet’s Color
• Accessories are given in the last of this
parts list.
IC1016-702-339-01 IC D36521A11AQC
IC1036-702-440-01 IC LM4890MMX
IC5028-759-657-74 IC XC62HR3302MR
IC5038-759-657-74 IC XC62HR3302MR
IC5048-759-657-74 IC XC62HR3302MR
IC5058-759-825-96 IC XC6368A371MR
IC5068-759-694-89 IC XC61CN1002MR
IC7016-700-550-01 IC K9F6408U0A-TCB0T
IC7028-759-333-42 IC XC61AN3002MR
IC7036-802-029-01 IC uPD780308GC-A57-8EU
IC7048-759-560-17 IC RS5C348A-E2
< JACK >
J1011-784-848-41 JACK (MIC (PLUG IN POWER))
J1021-784-848-41 JACK (EAR)
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper on the revised page allows you to jump to the next revised page.
Ver.DateDescription of Revision
1.02002. 04New
20
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