Sony MZ-R5ST Service Manual page 41

6-9. SCHEMATIC DIAGRAM — MD MAIN SECTION (3/3) — • Refer to page 77 for IC Block Diagrams.
1 2 3 4
MAIN BOARD (3/3)
A
5 4
IC301
IC301
REG.
RN5RZ25A
1 2 3
Q301
DTA144EUA
C303 C305
SWITCH
10 47
6.3V 6.3V
B
C304
1000p B
20
S301
MIC-SENS
0
HIGH
LOW
R101 C365
6.8k 10
C205
0.50% 6.3V 150p CH
C
R365100
C210 C203 R207
1 1
33k0.50%
6.3V
6.3V
1.2(0.4)
0
C110 C103
FB305 0
1
1
J301 6.3V
6.3V
1.6(0) 1.2(0)
MIC 0 0
(0.3) (0.3) C105
(PLUG IN POWER) 150p CH
D
C306
FB350 0
* R107
33k
C101
TP3011 0.50%
2200p B
MIC-GND
D304 DA204U
(CHASSIS)
E
F
16
G
— 55 —
5 6 7
XMICDET
C209
10
C207 R205
6.3V
10 22k
6.3V
0
Q201
2SC4213
C206 SENS
47 SWITCH
R208
6.3V
680 0.50%
C220
C120 1.2
0 R203 0.47 B
0.47 (1.3)
6.8k
0.50% B
2.7
1.3 1.3 2.7
1.1(1.3)
36 35 34 33 32 31 30 29 28 27 26 25
IC302
MIC AMP
37 RIN3 DZF 24
38 23
LIN3 NC
IC303 1.3
39 TST2 VCOM 22
C310
AD/DA-CONVERTER
0.047 F
40 RIN2 AGND 21
2.7
41 LIN2 VA 20
R108 2.7
R103 IC303
680 42 19
6.8k TST1 AK4515-VQ VB
0.50% 1.3(0.6) 2.8
0.50%
43 RIN1 VD 18
1.3(0.6)
C106 0 44 LIN1 DGND 17
0
47 Q101
45 SSB CDTI 16
6.3V SENS 2.8 0
2SC4213 XRST
SWITCH 46 XRST CDTO 15
0 2.8 2.8
XPD
47 PD
CCLK 14
2.8
C107
48 CMODE CS 13
10
C109
6.3V C320
R105 10
0.1
22k
6.3V F
1 2 3 4 5 6 7 8 10 11
9 12 C321
C307
47
0.1 1.4 1.4 1.3 1.0
6.3V
(0)
F
R306
10
— 56 —
8 9 10 11
2.0
2.8
C268
1
B
R236
C261
4.7k
680p B
0.50% IC305
IC805
C168 AUDIO GAIN
HP.AMP
1 CONTROL
R374
B
100k
IC305
R136 DS1801E IC805
4.7k
C161 EVR LA4800V-TLM
0.50%
680p B C399
0.68
2.8 10V
2.0
1 16
PWSW MUTE
C327 1.0 1.1
22 2 15
INR OUTR
6.3V 1.1
2.9 2.9 0.1 1.2 1.1
1.2 3 14
INC PWGND
1.1 1.1
4 INL OUTC 13
1.1
5 12
VREF OUTL
C294 22 4V 2.7
C315 D301 1.0
6 11
0.1 NM PRGND VCC
2.4
F 7 10
VREFC RFC
1.1
8 RFOUT BEEP 9
C293
2.4
3.3
C292
6.3v
1.1 4.7
0 1.1 1.2
6.3V C295
4.7
6.3V
R160 R237
R260 R137
3.3k
C318 1M 1M
3.3k
0.1 F 2.8 2.8
2.8 3 2.8 6 3
6
C322 1.1 1.1
2 5 2 5
10 1.1 Q313
6.3V 1.0
UMB2
BEEP
L304 1 4 1 4
2.8 2.8
10u H
Q314 C346 C345
UMB2 10 22
BEEP
6.3V 6.3V
L303 10 u H
MAIN BOARD
(2/3)
12 13 14 15
Ref. No. JEW AEP/UK
0 Ω
FB302 FB (HM102)
0 Ω
FB303 FB (HM102)
0 Ω
FB304 FB (HM102)
C306 1000p (B) 0.1 (B)
IC306
MUTE
CONTROL
IC306
PST9322
TP3101
TP3002
R119 C124 HP-DATA TP3001 R-VCC
FB301FB AVLSI/DATA
2.2 0.22F
R380 0
FB302 *
FB303 * TP3003KEY2
R219 C224
TP3004
2.2 0.22F
R-GND
7
FB304 * 6
5
J302
FB235 0 4
FB135 0 3
REMOTE
2
1
R364 2.2
TP3007
HP-COM
C338
TP3005 TP3006
1 B
HP-L HP-R
5 4 5 4
D302 D303
FTZ6.8E FTZ6.8E
1 2 3 1 2 3
TP383
1.0 2.8 Q311 Mech.chassis(HP)
6 4 UMD2
2
5 2.8
0
(CHASSIS)
1
3
2.8
BUFFER
MAIN BOARD
(2/3)
— 57 —
MZ-R5ST
Note:
• 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 / W or less unless otherwise
4
specified.
• A : B+ Line.
• Power voltage is dc 4.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
no mark : PB
( ) : REC
• Signal path.
E : PB
a : REC
— 58 —