Sony ICD-35 / ICD-55 Service Manual ▷ View online
– 14 –
– 15 –
– 16 –
• Waveforms
– MAIN Board –
– MAIN Board –
1
IC101
@™
MCK, IC104
4
CLK OUT
(REC/PB mode) 1 V/DIV, 50 ns/DIV
• IC Block Diagrams
IC101
MSM7590L-01TS-K
2
IC101
@ª
RSYNC,
#º
XSYNC
(REC/PB mode) 1 V/DIV, 50 µs/DIV
3
IC705
1
1 V/DIV, 50 µs/DIV
4
IC705
2
1 V/DIV, 50 µs/DIV
5
IC705
5
1 V/DIV, 50 µs/DIV
6
IC701
&ª
X2 (REC/PB mode)
1 V/DIV, 50 ns/DIV
7
IC701
*™
XT1 (REC/PB mode)
1 V/DIV, 10 µs/DIV
8
IC703
1
32KOUT (REC/PB mode)
1 V/DIV, 10 µs/DIV
9
IC703
6
INTR (REC/PB mode)
1 V/DIV, 100 ms/DIV
0
IC703
8
OSCOUT (REC/PB mode)
200 mV/DIV, 10 µs/DIV
!¡
IC502
4
LX (REC/PB mode)
1 V/DIV, 5 µs/DIV
!™
Q502 Base (REC/PB mode)
200 mV/DIV, 5 µs/DIV
200 mV/DIV, 5 µs/DIV
!£
Q502 Collector (REC/PB mode)
1 V/DIV, 5 µs/DIV
1 V/DIV, 5 µs/DIV
!¢
IC501
4
LX (REC/PB mode)
1 V/DIV, 5 µs/DIV
3.5 Vp-p
95 ns
3.4 Vp-p
123.5
µ
s
3.3 Vp-p
123.5
µ
s
3.4 Vp-p
123.5
µ
s
3.4 Vp-p
123.5
µ
s
3.4 Vp-p
200 ns
2.4 Vp-p
30.6 us
2.5 Vp-p
30.6
µ
s
4.3 Vp-p
500 ms
1.1 Vp-p
30.5
µ
s
3.4 Vp-p
10.4
µ
s
712 mVp-p
10.4
µ
s
4.1 Vp-p
10.4
µ
s
3.9 Vp-p
10.4
µ
s
IR
PCMRO
PCMRI
PCMRI
ATT
ATT
PCM
ENCODER
ADPCM
ENCODER
REFERENCE
POWER SUPPLY
ADPCM
DECODER
CLOCK,
TIMING
TIMING
GENERATOR
P/S
or
S/P
PCM
DECODER
BACK-GROUND
NOISE
GENERATOR
DTMF/
OTHERS TONE
GENERATOR
VOICE
DETECT
AIN1+
AIN1–
GSX1
AIN2
25
24
23
22
21
MCK
CPU
INTERFACE
DEN
20 EXCK
19
DIN
18 DOUT
17
VOXO
PCMSO
PCMSI
IS
28
27
26
BCLK
XSYNC
RSYNC
31
DG
32
30
29
3
SG
2
AG
1
4
5
GSX2
7
VFRO
8
PWI
9
AOUT– 10
AOUT+ 11
6
+
–
–
+
–
+
–
–1
SAO+ 12
+1
SAO–
13
VOXI 15
VDD 16
PDN/RESET 14
–1
IC102
NJM2076M (TE2)
INVA IN
NON INVB IN
BASE B
BASE A
A OUT
VSS
B OUT
2
VDD
3
1
4
7
6
5
8
POWER
AMP
POWER
AMP
IC104
XC25A08510MR
CLKIN
VSS
VDD
CLKOUT
PHASE
DETECTOR
1/N
COUNTER
L.P.F.
VCO
1/2
BUFFER
2
1
3
4
CE
5
IC501
XC6372C331PR
IC502
XC6372D351PR
NC
VOUT
CE
VSS
LX
2
1
3
4
5
VLX
LIMITER
PWM/PFM
CONTROL
OSC 100kHz
BUFFER
PHASE
COMPARATOR
REFERENCE
VOLTAGE
CHIP
ENABLE
SLOW
START
+
–
VDD
IC703
RS5C348A-E2
VDD
VDD
OSCIN
OSCOUT
CE
/INTR
32KOUT
SCLK
SO
SI
VSS
32 kHz
OUTPUT
CONTROL
COMPARATOR
W
COMPARATOR
D
ADDRESS
REGISTER
I/O
CONTROL
ADDRESS
DECODER
DECODER
SHIFT
REGISTER
INTERRUPT
CONTROL
OSC
DETECT
VOLTAGE
DETECT
ALARM W REGISTER
(WEEK, MIN, HOUR)
ALARM D REGISTER
(MIN, HOUR)
DIV
OSC
DIVIDER
CORRECTION
9
10
8
7
6
2
3
4
5
1
TIMER COUNTER
SEC, MIN, HOUR, WEEK,
DAY, MONTH, YEAR
– 17 –
4-4.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC701
µ
PD78P0308GC (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Function
1
KEY0
I
Key input terminal (A/D input) S701 to S705 (STOP, REC START/STOP, PLAY/STOP
(EXECUTE), –
(EXECUTE), –
= (SELECT), + + (SELECT) ) keys input
2
KEY1
I
Key input terminal (A/D input)
S706 to S710 (FILE, MENU, PRIORITY, ERASE, INDEX) keys input
S706 to S710 (FILE, MENU, PRIORITY, ERASE, INDEX) keys input
3
SPDSW
I
PLAY SPEED select switch (S712) input terminal (A/D input)
“L”: SLOW, “M”: NORMAL, “H”: FAST
“L”: SLOW, “M”: NORMAL, “H”: FAST
4
XHOLD
I
HOLD switch (S711) input terminal “L”: HOLD ON, “H”: HOLD OFF
5
LMUTE
O
Line muting control signal output terminal “H”: line muting on
6
MICSEL
O
Microphone sensitivity select signal output terminal
“L”: mic sensitivity high, “H”: mic sensitivity low
“L”: mic sensitivity high, “H”: mic sensitivity low
7
XFMCE
O
Chip enable signal output to the flash memory (IC702) “L” active
8
VDD
—
Power supply terminal (+3.3V)
9
AVREF
I
Reference voltage input terminal (for A/D converter)
10
XFMWE
O
Write enable signal output to the flash memory (IC702) “L” active
11
XFMALE
O
Address latch enable signal output to the flash memory (IC702) “L” active
12
VSS1
—
Ground terminal
13
XFMBSY
I
Ready/busy detection signal input from the flash memory (IC702) “L” active
14
XFMCLE
O
Command latch enable signal output to the flash memory (IC702) “L” active
15
SYNCOUT
O
FS sync signal output to the MSM7590L (IC101)
16
SYNCMSK
O
X (R) sync control signal output to the MSM7590L (IC101)
17
XFMRE
O
Read enable signal output to the flash memory (IC702) “L” active
18
MSKCLK
I
Clock signal input for the X (R) sync output control
19
XFMWP
O
Write protect signal output to the flash memory (IC702) “L” active
20
XFMSE
O
Spare space enable signal output to the flash memory (IC702) “L” active
21
BEEP
O
Beep sound drive signal output terminal (2.4 kHz)
22
LIGHT
O
LED drive signal output of the LCD back light LED (D503) “H”: LED on (back light on)
23 to 26
COM0 to COM3
O
Common drive signal output to the liquid crystal display (ND701)
27
BIAS
O
Power supply output terminal for the liquid crystal display
28 to 30
VLC0 to VLC2
I
Power supply input terminal for the liquid crystal display
31
VSS0
—
Ground terminal
32 to 61
S0 to S29
O
Segment drive signal output to the liquid crystal display (ND701)
62
—
O
Not used (open)
63
XSERV
I
Setting terminal for the service mode Not used (open)
64
TEST
I
Setting terminal for the test mode “L”: test mode (Normally: fixed at “H”)
65
XDSPDEN
O
DSP control interface enable signal output to the MSM7590L (IC101)
66
LEDREC
O
LED drive signal output of the REC indicator (D504 red) “H”: LED on (rec mode)
67
LEDPLY
O
LED drive signal output of the PLAY indicator (D504 green) “H”: LED on (play mode)
68
AMPPO
O
Power on/off control signal output to the power amplifier (IC102)
“H”: power on (play mode)
“H”: power on (play mode)
69
XSPOWER
O
Power on/off control signal output for the MSM7590L (IC101) and LED power supply
“L”: power on
“L”: power on
70
RTCCE
O
Chip enable signal output to the RS5C348A (IC703) “H” active
71
XPDRST
O
Reset signal and power down detection signal output to the MSM7590L (IC101)
“L”: reset or power down
“L”: reset or power down
72
DSPIS
I
Recording serial data input from the MSM7590L (IC101)
73
DSPIR
O
Playback serial data output to the MSM7590L (IC101)
– 18 –
Pin No.
Pin Name
I/O
Function
74
XBCK
O
DSP bit clock signal output to the MSM7590L (IC101)
75
RTCDI
I
Serial data input from the RS5C348A (IC703)
76
RTCDO
O
Serial data and DSP register control data output to the RS5C348A (IC703)
77
RTCCLK
O
Serial data and DSP register control data transfer clock signal output to the RS5C348A (IC703)
78
IC
—
Fixed at “L”
79
X2
O
Main system clock output terminal (5 MHz)
80
X1
I
Main system clock input terminal (5 MHz)
81
VDD1
—
Power supply terminal (+3.3V)
82
XT1
I
Sub system clock input terminal (32.768 kHz)
83
XT2
O
Sub system clock output terminal (32.768 kHz) Not used (open)
84
XRESET
I
System reset signal input from the reset signal generator (IC505) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
85
SYNCIN
I
Interrupt input terminal of the DSP X (R) sync
86
WAKEUP
I
Key interruption processing start signal input terminal
87
RTCINT
I
Interrupt input from the RS5C348A (IC703) (2 Hz)
88
—
O
Not used (open)
89
LPMODE
O
Filter selection signal output terminal “L”: SP mode, “H”: LP mode
90
AVREFO
O
Reference voltage output terminal (for A/D converter)
91 to 98
FMIO0 to FMIO7
I/O
Two-way data bus with the flash memory (IC702) (bit 0 to bit 7)
99
AVSS
—
Ground terminal (for A/D converter)
100
BATT
I
Dry battery voltage detection signal input terminal (A/D input)
– 19 –
SECTION 5
EXPLODED VIEW
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories and packing materials are given
in the last of the electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
12
18
20
19
11
14
21
18
13
19
10
9
6
5
19
4
3
2
1
17
15
16
7
8
W501
W502
MIC101
D503
ND701
W701
SP101
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
22
1
4-214-309-01 LID, BATTERY CASE
2
3-375-114-81 SCREW (1.7X4.5), TAPPING
3
3-912-036-21 KNOB (MODE)
4
3-928-815-11 STRAP, HAND
5
4-214-308-11 CASE (REAR)
6
4-214-295-01 KNOB (HOLD)
7
4-214-293-01 BUTTON (SEARCH) (
+ +, – =)
8
4-214-312-01 BUTTON (PLAY) (
( p)
9
3-375-114-41 SCREW
10
4-216-129-01 BRACKET (SPEAKER B)
11
4-214-300-01 BRACKET (SPEAKER)
12
A-3320-724-A CASE (FRONT) SUB ASSY
13
4-214-297-01 BRACKET (JACK)
14
3-375-114-01 SCREW (M1.7X4)
* 15
A-3323-080-A MAIN BOARD, COMPLETE
16
4-214-299-01 BRACKET (LCD)
17
4-216-159-01 HOLDER, MICROPHONE
18
4-218-124-01 SHEET (C), ADHESIVE
19
4-218-419-01 CUSHION (A)
20
4-218-418-01 SHEET (D), ADHESIVE
21
4-218-121-01 SHEET (MICROPHONE)
22
4-217-198-01 SHEET (SPEAKER)
D503
1-517-824-11 LIGHT, LCD BACK
MIC101 1-542-373-11 MICROPHONE, ELECTRIC CONDENSER (MIC)
ND701
ND701
1-803-342-11 DISPLAY, LIQUID CRISTAL
SP101
1-504-691-12 SPEAKER (3.6cm)
W501
4-214-301-01 TERMINAL (+), BATTERY
W502
4-214-302-01 TERMINAL (-), BATTERY
W701
1-694-478-11 CONDUCTIVE BOARD, CONNECTION
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