Sony ICD-B7 - Ic Recorder User manual

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SERVICE MANUAL
US Model
Canadian Model
AEP Model
Tourist Model
ICD-B7
IC RECORDER
Recording media Built-in flash memory, Monaural recording
Recording time 150 minutes
Frequency response 150 Hz - 3,500 Hz
Speaker approx. 3.2 cm (1 5/16 in.) dia.
Power output 150 mW
Input/Output • Earphone jack (minijack) for 8 - 300 ohms
earphone/headphones
•Microphone jack (minijack, monaural)
Plug in power
Minimum input level 0.6 mV
3 kilohms or lower impedance microphone
Power requirements Two LR03 (sizeAAA) alkaline batteries: 3V DC
Dimensions (w/h/d) (not incl. projecting parts and controls)
44.5 ×105.3 ×14.0 mm (1 13/16 ×4 1/4 ×9/16 in.)
Mass (incl. batteries) 68 g (2.4 oz)
Design and specifications are subject to change without notice.
SPECIFICATIONS
Ver 1.0 2003. 01
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-877-003-01
2003A0400-1
© 2003. 01

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TABLE OF CONTENTS
1. GENERAL
Index to Parts and Controls ..................................................... 3
2. DISASSEMBLY
2-1. Upper Lid Assy ................................................................... 4
2-2. F-SW Board, P-SW Board .................................................. 5
2-3. Main Board ......................................................................... 5
3. DIAGRAMS
3-1. IC Pin Description............................................................... 6
3-2. Block Diagram .................................................................... 9
3-3. Schematic Diagram – Main Section –............................... 10
3-4. Printed Wiring Board – Main Section – ............................ 11
3-5. Printed Wiring Board – F-SW Section – ........................... 12
3-6. Printed Wiring Board – P-SW Section – ........................... 13
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
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.
ICD-B7
•UNLEADED SOLDER
Boardsrequiring useof unleaded solder are printedwith the lead-
free mark (LF) indicating the solder contains no lead.
(Caution:Some printedcircuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
•Unleadedsolder meltsat a temperature about 40°Chigher 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.

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ICD-B7
SECTION 1
GENERAL This section is extracted
from instruction manual.

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ICD-B7
Note : This set can be disassemble according to the following sequence.
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. UPPER LID ASSY
2-1. UPPER LID ASSY
(Page 4)
2-2. F-SW BOARD,
P-SW BOARD
(Page 5)
SET
2-3. MAIN BOARD
(Page 5)
1 B 1.7x10
4 claw
2 B 1.7x7
7 screws 1.7x2.5
8 speaker (SP101)
3 claws
5 claws
9 upper lid assy
case ass
y
6
claw

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ICD-B7
2-2. F-SW BOARD, P-SW BOARD
2-3. MAIN BOARD
2 CN701
3
case assy
5 F-SW board
6 P-SW board
4 Removal the five solders.
1 Removal the solder.
4 claw
5 claw
case assy
1 Removal the two solders.
6 MAIN board
2 speaker (SP101)
3 B 1.7x
4

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ICD-B7
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
4XHOLD I Hold switch input
5AMPPOW O Power down control output for power amplifier IC (IC103).
6AVREFON O A/D reference voltage input
7XFMCE O Chip enable output for flash memory IC (IC701).
8VDD0 — Power supply pin
9AVREF — 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

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ICD-B7
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

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ICD-B7
MEMO

ICD-B7
99
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
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
XFMALE
XFMWE
XFMWP
XTEST
WAKEUP
62 MGTEST
63 MGHIGH
KEY0
KEY1
KEY2
XHOLD
S703
HOLD
OFF ON
I/O
TIMER
COUNTER
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
SCLK
CE
INTB
32KOUT
4
3
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 48
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)
+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

ICD-B7
1010
3-3. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 14 for Common Note on Schematic Diagrams, Waveforms and IC Block Diagrams.
IC B/D
IC B/D
C116 R115
R114 R113
3LNOIS-TL
R111
C115
R110
R112
R741
SL701
TP745
R761
TP705
R704
R705
C701
C702
IC702
D701
R727R726
R715
R719
R714
R755
R723
R724
C706
C705
C708
C707
D702
X702
TP706
TP703
TP704
TP707
R706
R707
R757
R729
R730
R731
R732
R733
R756
R760
C728C712C711
R758R736R734
R710
R702
TP101
TP110
R101
R102
C101
R103
R104
C103 C104
C105
C106
R105 C109
C110
R136
C114
MIC101
J101
TP108
TP102
IC506
C509
C508R505
R504
R502
R503
C507R501
IC505
D501
IC504IC503IC502
C127
R130
R131
R132
R133
R134
R129
R128
R127
R126
R125
AGP100
R124
R123
R121
R122
C126C107
R116
C128
R135
C129
C131
C119 C120
FB102
FB101
R117C121
R119
R120C123
IC103
J102
FB103
TP106
FB104
TP105
TP104
C730
TP502
TP107
TP501
TP503
TP504 L501
TP506TP505TP507
C505
10V
TP508
C504
C510C502
CN701
CN501
R746 R747 R743R753 R744 R745 R742
S705 S704 S715 S709 S708 S707 S706
W704
W701
W702
W703
W706
S711 S712 S714 S710 S713
S703
R750 R749 R748 R752 R751 W711
W716
W712
W713
W714
TP747
TP744
TP749
TP748
TP741
TP743
TP742
TP751
TP752
TP754
TP753
TP746
RV101
IC101
C125
C132
100p
SP101
R709
R725
R708 IC704
X101
X701
TP702
TP701
MGTEST
MGHIGH
IC703
A58-8EU
MEMORY CONTROL,SYSTEM CONTROL
C703
C704
TP708
R701
R703
IC701
C715
R713
R712
Q701
TP755
R508R506
R507
Q703 Q704 Q705
Q702
R711
Q501
Q502
Q101
C714
LCD701
0
C124