Qa Board - Sony VPL-PX1 Service Manual

QA Board Waveforms
1 2
1.0Vp-p (H)
1.5Vp-p (H)
VIDEO
VIDEO
4
3
1.0Vp-p (H)
1.5Vp-p (H)
VIDEO/Y
U-IN
5 6
1.1Vp-p (H)
1.2Vp-p (H)
V-IN B-Y
8
7
1.5Vp-p (H)
950mVp-p (H)
R-Y Y
9 !º
4.0Vp-p (H) 5.0Vp-p (V)
SCCP V-VD
!¡
5.0Vp-p (H)
V-HD
CXD2064Q-T6 (IC1205)
VERTICAL
BORDER EMPHA
NTSC:1H NTSC:1H
ADIN 2 A/D
PAL :2H PAL :2H
+ +
DL D/A 9 AYO
- -
CLPO 1 CLAMP
ADAPTIVE
FILTER OP
D/A 7 ACO
LOGICAL OPERATION
4fsc
SW
PHASE
COMPARATOR
VCO 1/4
SW
1/2
42 44 39 37 38
CPO VCV PLSL FIN CKSL
VPL-PX1
A B
QA Board IC Block Diagrams
CXA1846AN-T4 (IC1003)
20 19 18 17 16 15 14 13 12 11
–
8dB STEP 1dB STEP
+
VOLUME VOLUME
VCT
LATCH ZC
BUFFER
LATCH
CONTROL DET
SHIFT
REGISTER
8dB STEP 1dB STEP
+ VOLUME VOLUME
–
1 2 3 4 5 6 7 8 9 10
CXA1875AM-T4 (IC1102)
16 15 14 13 12 11 10 9
OPEN COLLECTOR
LEVEL LEVEL
LATCH
CONVERTER CONVERTER
LEVEL
CONVERTER
2
I C DECODER
POWER
ON
RESET
LATCH LATCH LATCH LATCH LATCH
– DAC DAC DAC DAC DAC
+
VCC
REG
AMP AMP AMP AMP AMP
1 2 3 4 5 6 7 8
LM4863MTEX (IC1004)
4,13
_IN A
6 _
5 _OUT A
+IN A
8 +
20kZ
20kZ 20kZ
50kZ
_
Bypass 3
+OUT A
10 V /2
DD
+
50kZ
_IN A
11 _
12
_OUT B
+IN A
2 +
20kZ
20kZ
20kZ
50kZ
_
14
1 Shutdown +OUT B
+
16
HP-IN
2,7,15
C D
QA QA
MM1111XFBE (IC1203)
TDA9143/S1 (IC1202)
GND OUT Vcc NC
8 7 6 5
ADDR(CVBS)
BUFFER
I/O PORT
SW
CLAMP
O PORT/LLC
BIAS
CLAMP
1 2 3 4
IN1 SW IN2 NC
MM1231XFBE (IC1204)
IN 1 A GND 1 IN 2 B V IN 2 A GND 3 IN 3 B
CC SW 2
16 15 14 13 12 11 10 9
H L
L H
H L
1 2 3 4 5 6 7 8
IN 1 B SW 1 OUT 1 GND 2 OUT 2 OUT 3 SW 3 IN 3 A
TDA4665T/V5-118 (IC1201)
DIGITAL
SUPPLY
VP2 1 16
N.C 2 15
SIGNAL
CLAMPING
SAMPLE
LINE
AND- LP
MEMORY
DGND 3 14
HOLD
pre-amplifiers
addition output
stages buffers
GND 4
13
SIGNAL
CLAMPING
SAMPLE
PULSE IN 5 LINE 12
AND- LP
MEMORY
HOLD
6
NC 11
3MHz shifting clock
FREQUENCY
SANDCASTLE DIVIDER
PHASE
DETECTOR BY 192
DETECTOR
IC 7 10
6MHz DIVIDER
LP
CCO BY 2
ANALOG
GND 8 9
SUPPLY
TC7W241FU (IC1209)
8 7 6 5
S R Q
C
D Q
1 2 3 4
8-7 8-7
E
SDA SCL VCC HPLL SC VA CLP/HA R
6 5 7 24 10 11 17 21 20
VA
VERTICAL
TIMING
22 2 HA
I C-BUS SYNC
GENERATOR CLP
SEPARATOR
ECL
15
LCA
ECL
16 SYNC
HORIZONTAL
TRAP
SEPARATOR PLL
SECAM FILTER
Y/C VBS 26
Y CLAMP
CLOCHE
TUNING
CHROMA
CHROMA CHROMA
ACC
SWITCH BANDPASS PLL
C 25
INA-INB
DEC 8 BIAS
ECMB
9 28 27 29 30 31
DGND FIL ref AGND CPLL XTAL XTAL2
TDA9178-S0 (IC1208)
LUMINANCE VECTOR PROCESSING SPECTRAL PROCESSING
Y
LUMINANCE
Y IN
6
INPUT PROCESSING
U IN 8
STAGE
V IN 9
U,V BLACK STRETCH
HISTOGRAM PROCESSING
GAMMA CONTROL
COLOUR VECTOR
PROCESSING
SATURATION DELAY
+ (R-Y)IN CORRECTION CONTROL
–
DEC DIG 15
NC
V 20
CC
+ SUPPLY
(B-Y)IN
–
V EE 18
COLOUR
SKIN TONE CORRECTION
PROCESSING
GREEN ENHANCEMENT
BLUE STRETCH
SAND-
NC
CASTIE
WINDOW
1
SC
GENERATION
+
(B-Y)OUT
– NOISE
MEASURING
CALIBRATE
'CUE FLASH'
+
(R-Y)OUT
–
FEATUREMODE
DETECTION
A GND
2
I C
2
SDA 14 I C CONTROL
VP1
F G
1
U V Y
G B F OUT OUT OUT
19 18 14 13 12
3 UIN
SWITCH
MATRIX
4 VIN
TB YD3-YD0
BPS
2 2
DELAY DELAY
32 SECAM ref
1 -(R–Y)
SECAM
SWITCH
DEMOD
2 -(B–Y)
2
PAL/NTSC
HUE
DEMOD
FSC
IDENT
BUFFER
SYSTEM
23
Fsc out
21 S OUT
3
SMART PEAKING
LTI 19 Y OUT
OUTPUT
VDC
17 U OUT
STAGE
16 V OUT
CDS
CTI
22 CF
4
ADEXT1(LOW FREQUENCIES)
3
ADXT1
ADEXT2(LOW FREQUENCIES)
ADC 4 ADXT2
ADEXT3(LOW FREQUENCIES)
5 ADXT3
5
H