DOWNLOAD Sony ICD-MX20DR9 Service Manual ↓ Size: 2.52 MB | Pages: 38 in PDF or view online for FREE

Model
ICD-MX20DR9
Pages
38
Size
2.52 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icd-mx20dr9.pdf
Date
PREV: Sony NAS-50HDE / SS-50HDE Service Manual

Sony ICD-MX20DR9 Service Manual ▷ View online

25
25
ICD-MX20DR9
ICD-MX20DR9
4-13. SCHEMATIC DIAGRAM  – MEMORY BOARD –
S9101
HOLD
R9102
C9101
C9102
C9103
C9104
R9104
R9105
R9107
R9108
R9109
R9110
R9106
R9112
IC9102
CN9101
R9103
IC9101
1M
0.1
10
6.3V
0.1
0.1
470k
10k
10k
470k
470k
470k
10k
0
NAND256W3A2BN6F
20P
470k
XC6219B312MR
26
26
ICD-MX20DR9
ICD-MX20DR9
4-14. PRINTED WIRING BOARD  – SWITCH BOARD –
   • 
 :Uses unleaded solder.
Q9502
Q9501
R9502
R9501
C9501
R9510
R9509
R9508
R9507
TP9503
TP9501
S9503
CN9502
S9502
S9501
S9505
R9511
R9512
R9513
R9514
JC9501
R9516
R9517
R9515
R9502
S9504
CN9501
TP9502
Q9503
R9506
R9505
R9504
RR9503
SWITCH BOARD
(SIDE A)
SWITCH BOARD
(SIDE B)
SWITCH UNIT
OPERATE
LED
Backlight
LED
for LCD
1-866-111-
(13)
13
1-866-111-
(13)
13
MENU
VOICE UP
OFF
ON
STOP
REC/
PAUSE
OFF
ON
VOLUME
DIVIDE
S
S
S
2
1
14
13
1
8
MAIN BOARD
CN9902
(Page 17)
C
1
2
A
B
C
D
E
F
G
3
4
5
6
7
8
9
10
11
12
13
14
15
27
27
ICD-MX20DR9
ICD-MX20DR9
4-15. SCHEMATIC DIAGRAM  – SWITCH BOARD –
SWITCH UNIT
S
S
S
R9518
Q9501
R9501
R9502
Q9502
S9501
S9502
VOICE UP
S9505
REC/
PAUSE
R9509
R9508
S9504
R9504
R9507
R9506
S5903
STOP
R9503
C9501
C9502
R9513
R9514
R9515
R9516
R9517
CN9502
JC9501
Q9503
CN9501
TP9501
TP9502
TP9503
R9505
R9511
R9512
1M
3LP01S-K-TL-E
470k
1M
2SK3019TL
22k
10k
MENU
1k
4.7k
2.2k
1k
0.01
0.01
100
100
10k
22k
100k
8P
0
RTF025N03TL
14P
2.2k
4.7k
1k
VOLUME +
VOLUME –
DIVIDE
A-B
28
28
ICD-MX20DR9
ICD-MX20DR9
• IC Block Diagrams
– AUDIO Board –
IC1304  NJU6366AF1 (TE1)
1/2
1/2
1/2
3-STATE
BUFFER
1
3
2
6
4
5
FOUT
VDD
XXT
VSS
XT
XCONT
RF
CG
CD
A
B
C
D
– MAIN Board –
IC4201  RX-4591CF
1
2
3
4
VDD
FOE
XIRQ
T1
5
10
9
8
7
6
FOUT
CE
CLK
DO
DI
CE
CLK
DO
DI
CE
CLK
DO
DI
GND
FOUT
CONTROLLER
DIVIDER
OSC
32.768kHz
INTERRUPTS
CONTROLLER
BUS
INTERFACE
CIRCUIT
CONTROL
REGISTER
AND
SYSTEM
CONTROLLER
TIMER
REGISTER
CLOCK
AND
CALENDAR
ARARM
REGISTER
IC1503  XC9502B092AR
1
2
3
4
RAMP WAVE
GENERATOR1
RAMP WAVE
GENERATOR2
EXT1
VDD
FB1
PWM1
5
10
9
8
7
6
EN1
EXT2
GND
FB2
PWM2
EN2
EN1 TO
INTERNAL CIRCUIT  
VREF1=0.9V
WITH SOFT START1,
EN1
VREF1=0.9V
WITH SOFT START2,
EN2
PWM/PFM
CONTROLLER1
PWM/PFM
CONTROLLER2
OSC
GENERATOR
EN2 TO
INTERNAL CIRCUIT  
PWM
COMPARATOR1 
PWM
COMPARATOR2 
ERROR AMP1 
ERROR AMP2 
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