Sony MV-900SDS / XVM-R90D Service Manual ▷ View online
38
XVM-R90D
– LCD Board –
IC501
ts
(YIN),
tj
(CIN)
(Color Bars)
500 mV/DIV, 20
µ
s/DIV
1
IC501
tf
(CTRAPIN)
(Color Bars)
2
IC501
yd
(VXO-NTSC)
3
IC601
qf
(POL)
7
IC601
ed
(PD)
8
IC601
eh
(VCO1)
9
500 mV/DIV, 20
µ
s/DIV
100 mV/DIV, 100 ns/DIV
1 V/DIV, 50
µ
s/DIV
2 V/DIV, 20
µ
s/DIV
2 V/DIV, 20 ns/DIV
Q857, 858 (Collector)
20 mV/DIV, 10
µ
s/DIV
q;
IC850
qa
(C2)
qa
IC401
r;
(X2)
qs
IC801
7
(1OUT),
Q801-2 (Base)
qd
Q801-1 (Base)
qf
5 V/DIV, 5
µ
s/DIV
2 V/DIV, 100 ns/DIV
5 V/DIV, 5
µ
s/DIV
5 V/DIV, 5
µ
s/DIV
H
1.5 Vp-p
H
1.2 Vp-p
282 ns
0.3 Vp-p
127
µ
s
3.8 Vp-p
63.6
µ
s
4.2 Vp-p
41 ns
3.8 Vp-p
15.2
µ
s
32 Vp-p
8.8
µ
s
12.2 Vp-p
240 ns
3.4 Vp-p
12.6 Vp-p
4.1
µ
s
4.1
µ
s
10.2 Vp-p
39
XVM-R90D
IC7
PCM1751DBQR
•
IC Block Diagrams
– MAIN Board –
SCK
1 2 3
7 8
4
5
6
SERIAL
INPUT
INTERFACE
10
9
BCK
DATA
LRCK
VOUTL
VOUTR
DGND
VDD
VCC
VCOM
AGND
FUNCTION
CONTROL
INTERFACE
SYSTEM
CLOCK
MANAGER
8 TIME OVER
SAMPLING
DIGITAL FILTER
WITH
FUNCTION
CONTROLLER
ENHANCED
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
D/A
CONVERTER
D/A
CONVERTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
ZERO DETECT
POWER SUPPLY
12
11
ZEROL
ZEROR
15
14
ML
MC
16
13
MD
SYSTEM
CLOCK
IC101
MM1508XNRE
1
SW
2
OUT
3
VCC
6dB
DRIVER
BIAS
CLAMP
CLAMP
4 IN2
6 IN1
GND
5
IC102
NJM2283V-TE1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1X
A
X
GND
Y
Z
C
OZ
1Z
GND
0Y
B
VCC
1Y
GND
0X
+
–
+
–
–
PHASE
DETECTOR
22
21
20
19
18
17
16
15
14
13
12
1
2
3
4
5
6
7
8
9
10
11
L. P. F.
L. P. F.
SHIFT REGISTER
PROGRAM COUNTER
1
4
4
1
50
1
19
VCC
2
MUTE
MPX
OSC
0
+
1
2
2
RF
PRE-EMPHASIS
& LIMITER
L-CH INPUT
PRE-EMPHASIS TIME CONSTANT
LPF TIME CONSTANT
PILOT SIGNAL ADJUST
AUDIO MUTING
DATA
CLOCK
CHIP ENABLE
X'TAL OSCILLATOR
X'TAL OSCILLATOR
PLL VCC
R-CH INPUT
PRE-EMPHASIS TIME CONSTANT
LPF TIME CONSTANT
FILTER
COMPOSITE SIGNAL OUTPUT
GND
PLL PHASE DETECTOR OUTPUT
VCC
RF OSCILLTOR
RF GND
RF OUTPUT
IC201
BH1415F-E2
40
XVM-R90D
IC301
BA9743AFV-E2
VCC
+
–
–
+
–
–
+
–
+
+
–
+
13
12
11
10
9
14
ERROR AMP 2
PWM COMP1
PWM COMP2
15
R
U.V.L.O.
S R
TIMER LATCH
VREF
16
–
+
+
S.C.P. COMP
7
6
5
4
3
ERROR AMP 1
TRIANGLE
OSCILLATOR
2
1
VREF
SCP
NON2
INV2
FB2
OUT2
DT2
CT
RT
NON1
INV1
FB1
DT1
OUT1
GND 8
VREF
VREF
REFERENCE
VOLTAGE
1
PROTECTION
REFERENCE
VOLTAGE,
SOFT START
RAMP WAVE
GENERATOR,
OSC
ERROR
AMP
PHASE
COMPENSATION
PWM
COMPARATOR
BUFFER,
DRIVER
VIN
2
EXT/2
3
P_BST
8
LX
7
EXT/1
5
FB
6
GND
PWM/PFM
CONTROLLER
4
CE
1
VIN 1
2
SW 1
3
VIN 2
4
NC
8 GND
7 V OUT
6 V+
5 NC
BIAS
BUFFER
1
2
4
8
7
6
5
LIN
SCL
LOUT
VDD
RIN
ROUT
SDA
+
−
−
+
−
−
+
−
3
VSS
CONTROL UNIT
1
STBY
2
OUT2
3
NC
4
PRE GND
5
NC
6
IN2
9
P.P
8
DC
7
IN1
VCC
OUT1
NC
POWER
AMP
RIPPLE
FILTER
+
–
–
POWER
AMP
REF
AMP
+
–
TSD
PROTECTOR
STANDBY SWITCH
POP SOUND
PROTECTION
BLOCK
12
11
10
IC706
PT2257-S
IC707
LA4627-E
IC305, 306
XC6377B103SR
IC704, 705
NJM2233BM
41
XVM-R90D
– LCD Board –
IC405
µ
PD6467GR-546-E1
6
11 BLK1
OUTPUT CONTROLLER
WRITE
ADDRESS
COUNTER
COUNTER
HORIZONTAL
ADDRESS
COUNTER
COUNTER
CHARACTER
SIZE
REGISTER
HORIZONTAL
SIZE
COUNTER
HORIZONTAL
POSITION
COUNTER
COUNTER
HORIZONTAL
ADDRESS
REGISTER
SYNC
GUARD
INSTRUCTION
DECODER
DATA INPUT
SHIFT
REGISTER
DISPLAY CONTROL
DATA REGISTER
BACK GROUND CONTROL
DATA REGISTER
CHARACTER GENERATOR ROM
12 x 18bit x 512 word
COLOR DATA
3bit x 336word
CHARACTER DATA
9bit x 336 word
VIDEO RAM
BLINK DATA
1bit x 336 word
REVERSE DATA
1bit x 336 word
OUTPUT INSTRUCTION
DATA
1bit x 336 word
DATA
SELECTOR
5
4
3
2
CS
1
CLK
DATA
PCL
VDD
CMDCT
CONTROL SIGNAL
OSCILLATOR
VERTICAL
ADDRESS
ADDRESS
REGISTER
VERTICAL
POSITION
COUNTER
POSITION
COUNTER
VERTICAL
ADDRESS
COUNTER
ADDRESS
COUNTER
VERTICAL
SIZE
COUNTER
10
9
TEST
GND
8
7
OSCOUT
OSCIN
12 VC1
13 BLK2
14 VC2
15 VBLK
16 VR
17 VG
18 VB
19 HSYNC
20 VSYNC
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