Sony DSR-250 Service Manual page 101

For Schematic Diagram
• Refer to page 4-63 for printed wiring board.
• Refer to page 4-123 for waveform.
1 2 3 4
VI-156 BOARD(9/25)
MECHA CONTROL(MC BLOCK)
A
-REF.NO.: 10000 SERIES-
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
R :REC MODE
P :PB MODE
68
TO(10/25) REEL_M_FG
B
XVSP_SCK
XVSP_SCK
TO(3/25,5/25,
C
27 VSP_SO
7/25,19/25,
VSP_SO
20/25)
XCS_HONEY
28 XCS_HONEY
TO(3/25)
XAUDIO_IN
69 XAUDIO_IN
TO(20/25)
XCS_EVR_DAC
70 XCS_EVR_DAC
TO(19/25)
XCS_AU2
71 XCS_AU2
TO(19/25)
D
XCS_AU1
72 XCS_AU1
TO(20/25)
XDRP_SCK
XDRP_SCK
DRP_SO
DRP_SO
73
TO(12/25)
XCS_TRF
XCS_TRF
XCS_IO
E
XCS_IO
63 SDC_IN
TO(7/25)
SDC_IN
XVIDEO_IN
XVIDEO_IN
46 TO(5/25,12/25, SWP
22/25)
F
DEM0 XDVCN
DEM0
DEM1
DEM1
74 XPWAD
TO(20/25)
XPWAD
XPWDA
XPWDA
ANALOG_MUTE
G
75 ANALOG_MUTE
TO(19/25,20/25)
IFI_VD
18 IFI_VD
TO(2/25,8/25)
76 XCC_DOWN
TO(10/25)
VFI_OE
40 TO(3/25,4/25, VFI_OE
5/25)
VREF
TRRV
TRRV
H
XRST_VSP
XRST_VSP
WRX
WRX
RDX
RDX
FRRV
FRRV
TRRT
TRRT
DRP
DRP
VSP_SI
VSP_SI
ALE
ALE
I
XDVCN
XDVCN
XRST_LINK
45 XRST_LINK
TO(5/25)
XRST_PHY
XRST_PHY
LIP_SLEEP
LIP_SLEEP
LPS
LPS
OFR
XCS_VFD
XCS_VFD
XCS_SFD
XCS_SFD
J MCDA0
MCDA0
MCDA1
MCDA1
MCDA2
MCDA2
MCDA3
MCDA3
MCDA4
MCDA4
MCDA5
MCDA6
MCDA7
K
MCHA0
MCHA1
MCCE
SCOD_WINDOW
SCOD_WINDOW
ATF_ERR
52 ATF_ERR
TO(5/25)
CL501 REC_CRRT0
REC_CRRT0
77 CL502 REC_CRRT1
TO(12/25)
L
REC_CRRT1
16
5 6 7
4 3 2 1
R535
IC503
1k
AMP
C510
0.01u
B
R536
1k
5 6 7 8
C504
120 119 118 117
0.1u
C502
B
10p
CH
52
R506
XX
C503
X501 1.1
10p X0
20MHz
CH
1.0
X1
VSS
MD2 0
MD2
MD1 3.0
MD1
MD0 3.0
MD0
C501 0.001u B
3.0
XSYS_RST
XPWAD R3.0/P0
100k
R501 XPWAD
XPWDA 3.0
SWP R502 100k XPWDA
XRST_LINK 0
100k XRST_LINK
R503
XRST_PHY 0
R504 XRST_PHY
100k
ANALOG_MUTE 0
ANALOG_MUTE
R505 470k
ALE 0
ALE
3.0
XDVCN
WRX 3.0
WR01
RDX 2.9
RDX
XCS_VFD 3.0
XCS_VFD
XCS_IO 0
XCS_AOI
XCS_EVR_DAC 0
XCS_DAC
XAUDIO_IN 0
AUDIO_IN
XCS_AU1 3.0
XCS_XYZ1
0
XHP_ON
XCS_TRF R3.0/P2.9
XCS_TRF
3.0
XCS_AU2
XCS_XYZ2
R534
3.0
470k
VDD
MCDA0
R2.5/P1.6
MCDA0
MCDA1 0
MCDA1
MCDA2 R1.4/P0.9
MCDA2
MCDA3 R1.5/P1.0
MCDA3
MCDA4 1.5
MCDA4
R507
1k
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
C512
0.001u B
C513 0.001u B
C514 0.001u
B
MCDA5
MCDA6
MCDA7
MCHA0
MCHA1
MCCE
4-29
8 9 10 11
R533 C506
R516
470k 0.01u
100k
B
C509
1u
C505
0.01u
B
IC504
116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91
EEP_RDY/BSY
EEP_RST
XCS_EEP
DEM1
DEM0
HP_JACK_IN
LIP_SLEEP
HI_SO(HI→MC)
HI_SI(MC→HI)
IC501
XHI_SCK
MECHA CONTROL DRP_SI
0
IC501 DRP_SO
2.9
MB91192PFF-G-120-BND
XDRP_SCK
LPS
VSP_SI
0.1
VSP_SO
2.9
XVSP_SCK
XCS_MC_FLASH
XHI_CS_MC
XCS_HONEY
REEL_PWM
0
CAP_PWM
0.7
DRUM_PWM
VSS
GND(EXTAL)
N.C.(XTAL)
VDD
DRUM_START
SWP_75Hz
DRP
C516
0.001u
B
C515
0.001u
B
12 13 14 15
R517
47k
± 0.5%
R518
220k
± 0.5%
C511
0.01u
B
4 3 2 1
IC502
EEPROM
AMP
IC502
C507
AK6417AM-E2 0.01u
B
XCS Vcc
3.0
3.0
XSCK XBUSY
3.0
5 6 7 8 2.9
RST
DI
3.0
0.1
GND
DO
3.0
R532
100k
3.0
3.0
0
DEM1
3.0
DEM0
0
3.0
LIP_SLEEP
2.9
HI_SO
2.6
HI_SI
R527
2.6 XHI_SCK
100k
2.9 DRP_SI
150 DRP_SO
R520
R521 220
XDRP_SCK
R528
0
LPS
100k
2.7
VSP_SI
R522 150
VSP_SO
R523 220
XVSP_SCK
R531
10k
0
2.7 XCS_MECHA
3.0
XCS_HONEY
0.5
R524 0 CAP_PWM
R525 0 DRUM_PWM
3.0
1.5
DRUM_START
3.0
1.5
DRP
SIGNAL PATH
REC REC/PB PB
Drum speed servo
Drum phase servo
Drum servo (speed and phase)
Capstan speed servo
Capstan servo (speed and phase)
Ref.signal
4-30
DSR-250/250P
16 17 18
C508
10u
6.3V
TA
REG_GND 6
TO(25/25)
FB501
D_2.8V 16
TO(25/25)
78
CM+ TO(11/25)
T_ENLTN_ERR
79
S_ELTN_ERR TO(10/25)
L_CASSETTE
EVER_3.0V 80
TO(17/25)
VTR_DD_ON 81
TO(17/25)
XC_IN 82
TO(10/25,17/25)
MODE_SW_A
MODE_SW_B
83
TO(10/25)
MODE_SW_C
MODE_SW_D
MODE_SW_D
DRUM_FWD
DRUM_FWD 84
TO(11/25)
REC_PROOF_SW
REC_PROOF_SW
85
DEW_AD TO(10/25)
DEW_AD
CAP_FG
CAP_FG
CAP_ON
CAP_ON
86 TO(11/25)
CAP_FWD
CAP_FWD
CAP_PWM
CAP_PWM
87
TO(10/25)
DRUM_ON
DRUM_ON
DRUM_START
DRUM_START
DRUM_PWM
DRUM_PWM
88
TO(11/25)
DRUM_FG
DRUM_FG
DRUM_PG
DRUM_PG
HICUE 89
TO(10/25)
LOAD
LOAD
90
UNLOAD TO(10/25)
UNLOAD
LM_LIM_ON
LM_LIM_ON
91
LM_LIM_DET TO(11/25)
LM_LIM_DET
TAPE_LED_ON
TAPE_LED_ON
TAPE_TOP 92 TO(10/25)
TAPE_TOP
TAPE_END
TAPE_END
SREEL_FG
SREEL_FG
93
TREEL_FG TO(10/25)
TREEL_FG
XREEL_HALL_ON
XREEL_HALL_ON 94
TO(11/25)
REEL_PWM 95
TO(10/25)
XDRP_SCK
DRP_SO 96
TO(22/25)
DRP_SI
XCS_MC_FLASH 97
TO(10/25,22/25)
100
MC_F_BUSY
TO(22/25)
HI_SO 34 TO(4/25,8/25,13/25,
17/25,22/25,23/25)
HI_SI 35 TO(4/25,8/25,13/25,
16/25,17/25)
XHI_SCK 32 TO(4/25,8/25,13/25,
16/25,17/25,22/25,23/25)
XCS_MECHA 98
TO(17/25)
REEL_ON
99
TO(10/25)
REEL_FWD
XSYS_RST 26
TO(17/25)
MECHA CONTROL
VI-156 (9/25)