Block Diagram -A/D, D/A Converter, Audio Section; Block Diagram -Key Control/Display/ Power Supply Section - Sony MZ-R91 Service Manual

6-2. BLOCK DIAGRAM – A/D, D/A CONVERTER, AUDIO Section –
DIGITAL REC
B
(Page 24)
+2.5V
REGULATOR VC B+
IC305
35 38
A/D, D/A CONVERTER
IC301
ADCL PGAL
ANALOG REC STDO 47 48
HIGH-PASS A/D
(Page 24) A 4
ADCR PGAR
FILTER CONVERTER
43 42
DADT, XBCK, AUDIO
LRCK, FS256 INTERFACE
DADT STDI
LOUT1 OPGAL
(Page 24) C 6 CONTROLLER
33 34
XBCK BCLK D/A
3 DPGA DBB ROUT1 OPGAR
CONVERTER
LRCK LRCK 32 31
2
FS256 MCLK CLOCK
1
DIVIDER
SRDT, SWDT,
SCLK SWDT CDTI
F
(Page 24) 18
CCLK CONTROL
SCLK
16 REGISTER
SRDT CDTO
17 INTERFACE
RESET
D
(Page 24) 61 XRST
PD
15 62
110 111
SYSTEM CONTROLLER
IC801 (2/3)
119 10 46 45
X801
16.9344MHz
REAL TIME CLOCK
IC804
4 3 2 1 3 4 2 7
D804 D801 DC/DC
EEPROM
VDD
2 CONVERTER
IC802
IC803, Q809
9 8
05
X802
32.768kHz
– 25 –
B+ SWITCH
VC B+
Q302
+2.5V
B+ SWITCH
REGULATOR VR B+
Q305, 306
IC304
LINE AMP
IC302
LIN2
53
LIN1
56
SUB
RIN2
TRACTION
52
RIN1
55
LOUT2
+
37 LINE OUT
LOW-PASS LINE AMP
ROUT2 ON/OFF SWITCH
FILTER IC303 +
36
Q101, 201
MUTING
Q101, 201
BEEP TONE
BUFFER
Q301, 303
MUTING LINE OUT ON/OFF
CONTROL SWITCH CONTROL SWITCH
Q308 Q307, 309
117
BEEP 18
XHP STBY 23
XOPT CONT 116
OPT DET 113
XJACK DET 114
XMIC DET 115
RMC DTCK 19
CD TEXT COPY
TSB SLV ON 34 DEETCT
Q801
101 41 72 70 48 71
LEVEL SHIFT
Q802, 803
+ LEVEL SHIFT LEVEL SHIFT
Q804 Q805
LEVEL SHIFT
Q806
BATT B+
TSB CLOCK
SWITCHING
BACK-UP BATT B+
Q807
– 26 –
6-3. BLOCK DIAGRAM – KEY CONTROL/DISPLAY/POWER SUPPLY Section –
OPTICAL
RECEIVER
OE
G
(Page 24)
RMC KEY
H
(Page 26)
J301
LINE IN
(OPTICAL)
ON
S807
SYNCHRO REC
(LINE IN JACK) OFF
OFF
S804
HOLD
J303
HOLD
MIC
(PLUG IN POWER)
S803
T MARK
S806
(PROTECT DETECT)
S901
J304
(BATTERY IN DETECT)
i/LINE OUT
S801
(OPEN/CLOSE DETECT)
BP801
(TEST)
VC B+ RVCC
DTCK
CDWM 2V
SWDT, SCLK
E
CDWM DATA
KEY-R
(Page 24)
RGND
SWITCH & LCD MODULE UNIT
SWDT
SDO
SCLK
SCK
LCD RST
LCD
RMC KEY DRIVER
H (Page 27)
STB
CS
REC LED
REC
PAUSE
PAUSE
REC
REC
SET KEY 1
SET KEY 2
XWK1
• SIGNAL PATH
: PLAY (ANALOG OUT)
B UP BATT
: REC (ANALOG IN) BAT1 BACK UP BATT B+
LITHIUM
: REC (DIGITAL IN)
BATTERY
(FOR BACK UP)
05
POWER CONTROL
IC901
VC B+
RF AMP (IC501), DSP (IC502),
MOTOR/COIL DRIVE (IC601),
VC SWITCHING VCIN
OVER WRITE HEAD DRIVE (IC603), 30 31
REGULATOR
SYSTEM CONTROLLER (IC801),
REMOTE CONTROL CIRCUIT B+ 29
VCON
SYSTEM CONTROLLER
IC801 (3/3)
SWITCHING
REGULATOR
1 SYNC REC STEP-UP
RF1 PRE DRIVER
& PWM
VSTB
73 XHOLD SW VBAKN 78 38
XWK3
RMC KEY 85 33
FFCLR XRST
FFCLR 39 37
SLEEP
SLEEP 40 36
CLK
SYSTEM
56 T.MARK REG CTL PWM 64 43
XWK2 CONTROL STEP-UP
34
DC/DC
XWK1
WK DET 83 35 CONVERTER
XWK4
3 PROTECT
HALF LOCK SW 84 32
VLD
14 XGUN ON VLD B+
11
VR
LASER APC CIRCUIT B+
VREG REGULATOR 12
10
50 OPEN CLOSW SW S802
VREG B+
OPEN . DSP (IC502) B+
VROUT
(FOR INTERNAL LOGIC)
SWITCHING
60 XTEST VC
RF1 +
REGULATOR
VC PWM 66 24
–
STEP-UP
RF2
PRE DRIVER
& PWM
VR
RF2 +
VRM PWM 65 23
–
VB
SERON 58 15 SERON
XRST RESET SIGNAL
XRST 43 40
GENEARTOR
POWER OFF
BATT B+
RESET SWITCH
Q808 VC B+
LCD RST
22
21 LCD STB
20 XCS LCD
CHGB
XCHG 59 47
CHG
MON
INP3
RF3 + 7 46
69 REC LED CHG MON 81 8
–
COMPARATOR
& BUFFER
VR B+
4 89
PAUSE KEY VRM MON
88 REC KEY
GND SW 42
86 SET KEY 1
87 SET KEY 2
– 27 –
MZ-R90/R91
OVER WRITE HEAD
DRIVE CIRCUIT B+
D905 L904
L1
28
PWMVC SWITCHING
16 REGULATOR
Q904
VB
VC
VG B+ D901 L902
MOTOR/COIL DRIVE
(IC601) B+
VG
BATT B+
19
SWVG MOTOR/COIL DRIVE (IC601),
17 OVER WRITE HEAD UP/DOWN
MOTOR DRIVE (IC602) B+
VR B+
(BATTERY CASE)
D906 L905
DRY BATTERY
SIZE "AA"
25
(IEC DESIGNATION R6)
1PC. 1.5V
L2
26
CHARGE
RECHARGEABLE
BATTERY
D907 (NICKEL-METAL)
NH-14WM 1.2V
+ RF5
+ 4 CHARGE ON
–
SWITCH
Q901 (1/2), 905
INM5
3
CHARGE
CONTROL
Q906
CHARGE
RS
CONTROL
2
Q901 (2/2)
CHGSW
48
VB
44
BATM
5
+2.5V
J901
LINE FILTER
DCIN 1
REGULATOR
LF901 DC IN 3V
IC902 !
GROUND LINE
SWITCHING
Q902
– 28 –