Yamaha DSP-AX1600 Service Manual page 111

A B C
SCHEMATIC DIAGRAM (D-VIDEO 2/2)
1
2
3
0
0
0.1
0
1.7
0
0.2
A/D DECODE
0
0
1.9
1.3
3.4
4
1.7
2.1
0
1.0
1.3
0.7
0
0
0
0.3
0
5
6
IC601: µPC2905AT-E1-AZ
THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR
1 INPUT
Safe operating
area protection
Start-up Reference
circuit voltage Saturation
Error Drive
protection
amp. circuit
3 OUTPUT
Thermal
shut down
Over current
7
protection
GND
2, 4
IC503: ADV7401BSTZ-80
Multiformat SDTV/HDTV Video Decoder and RGB Graphics Digitizer
8
9
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
10 with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
D E F
-5.0
-5.0
0 0.1
5.0
0 0.1
0 0
ENCODE D/A
5.0
0 0.1
0 0.1
0 0.1
0 0
0
0
0.1
5.0
2.6
0
2.6
2.7
B-3
0
0
3.4
3.2
0
3.4
3.4
0.1
0
2.0
0
~
0.1
0.1
0.1
3.2
0
3.2
3.4
0
0
0
3.4
IC524: LA73053-TLM-E
Analog Amp
N.C. 1 36 N.C.
N.C. 2 35 N.C.
VIN1 3 34 +VCC1
+Vcc
DCCNT1 VOUT1
4 6dB DR 33
GND 5 32 GND
VIN2 6 31 VOUT2
6dB DR
MUTE1 7 30 N.C.
VIN3 8 VOUT3
29
6dB DR
N.C. 9 28 -VCC1
N.C. 10 27 -VCC2
N.C. 11 26 N.C.
VIN4 12 25 +VCC2
+Vcc
DCCNT2 13 6dB DR 24 VOUT4 0
0
0
GND 14 23 GND 5.0
0
VIN5 15 22 VOUT5 0
5.0
6dB DR 5.0
0
MUTE2 16 21 N.C. 0
VIN6 17 20 VOUT6
6dB DR
-VCC4 18 19 -VCC3
POINT C-1 Pin 20 of IC501
Page 101 I2
to FUNCTION (1)_CB313
POINT B-3 Pin 37 of IC503
IC510~512, 607~609: SN74LVC541APWR
Octal buffer/driver
OE1 1 20 V
CC 1
OE1
A1 2 19 OE2
19
A2 3 18 Y1 OE2
A3 4 17 Y2
A4 5 16 Y3
2
A5 6 15 Y4 A1
A6 7 14 Y5
A7 8 13 Y6
A8 9 12 Y7 To Seven Other Channels
GND 10 11 Y8
G H
SDRAM
IC509: W9816G6CH -7
512K x 2 Banks x 16 Bits SDRAM
CLK 35
CKE 34
0.1
3.4 0.1
0.1 CS
3.2
0.1 RAS
3.4
0 1.6 CAS
0.5
WE
0.5
0.1
0.1
A10 20
0.1
I/P CONVERTER
0
0.1
1.8 1.2
2.6 0
2.7 3.4
2.6 3.4
2.6 3.4
2.6 0.1
2.6 3.4
2.6 3.4
2.6 0.1
2.7 0.1
0
1.8
~ 2.5
0.1 0.1
0.1 0.1
0
0.1
1.8 3.4
0.1 0.1
0.1 0.1
1.5
0.1
3.4
0.1
3.2
1.5 3.4
2.1 3.4
1.9 3.4
1.3 0.2
2.0
3.4
3.4
3.4
0.1
3.4
3.4
1.4
3.4
2.4 0.2
1.6 3.3
1.8 Video MICROPROCESSOR 3.4
1.5 3.4
3.4 1.4 0.3
3.4 0
3.4 1.3 0.3
0.2
0.2 3.4
0.2
0.2
0.2 3.4
0 4.7
0.1
0.2
5.1 3.4
0 3.4 ~
3.4 3.4 0
0.2 ~
0.2 0
~
0.2 0 2.6
7.2 0
3.4 0 0
3.4 0
0
0.1 C-1
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
0 0
0
0
0 0
0
0
0
4.9
5.1
2.6
0 0 5.1
2.6 0
0
3.4
IC521: SN74LV08APWR IC522: SN74AHCT08PWR
Quadruple 2-input positive-AND gate Quad 2-Input And Gate
1A 1 14 Vcc 1A 1 14 Vcc
1B 2 13 4B 1B 2 13 4B
1Y 3 12 4A 1Y 3 12 4A
18
Y1
2A 4 11 4Y 2A 4 11 4Y
2B 5 10 3B 2B 5 10 3B
2Y 6 9 3A 2Y 6 9 3A
GND 7 8 3Y GND 7 8 3Y
I J K
IC602: NJM2885DL1-33
Low dropout voltage regulator
VIN
GND
CLOCK
BUFFER
CONTROL COLUMN DECODER
18
SIGNAL R
17
GENERATOR O
COMMAND W
16 DECODER
D CELL ARRAY 2 DQ0
E
15 BANK #0
C
3 DQ1
O
D
E 5 DQ2
R
6 DQ3
SENSE AMPLIFIER
8 DQ4
9 DQ5
A0 21 MODE 11 DQ6
REGISTER
ADDRESS 12 DQ7
A3 24
REFRESH DQ
BUFFER
A4 27 COUNTER BUFFER 39 DQ8
40 DQ9
A9 32
42 DQ10
BA 19
43 DQ11
45 DQ12
46 DQ13
REFRESH COLUMN
COLUMN DECODER
48 DQ14
COUNTER COUNTER
R
49 DQ15
O
W
D CELL ARRAY
E BANK #1
C
O
D
E
14 LDQM
R
SENSE AMPLIFIER 36 UDQM
7.2 5.1
4.5 2.6 4.8 3.4
7.2
5.1
0
4.5 2.6 4.8 3.4
0 0
0
4.8 1.9 4.8 3.5
4.8 1.9 4.8 3.5
0 0
0 0
0.2
0.2
0.2
0.7
0.2
0.2
0.2
0.2
0
3.4
2.6
2.6
~ 0
~
4.8
~
0
Page 101 I3
4.7
4.2
4.2
5.1 to FUNCTION (1)_CB315
5.1
0
0.1 9.9
3.4 0
2.6
5.1 0
3.4
5.1
-4.8
-9.7 4.9
5.1
0.1
9.5
3.4 5.0
0 5.1 4.2
3.4
4.9
0 0.1
0.6
3.4
0.1
3.4
5.1
3.4
5.1
D-VIDEO
Page 103 E5
RS-232C
to OPERATION (2)_CB910
IC525: SN74LVC2G125DCUR IC527: PST9242NR
Dual bus buffer gate System Reset
1
1OE
1OE 1 8 VCC 6 6
1A 1Y
V CC
1A 2 7 2OE
7
2Y 3 6 1Y
2OE
4 5
GND 2A 3 3
2A 2Y
V
OUT
IC526: SN74AHCT1G125DCKR
Single Bus Buffer Gate
GND
SUB
OE 1 5 VCC
TC
A 2
GND 3 4 Y
L M N
RX-V1600/DSP-AX1600
IC603: NJM2845DL1-33
Low dropout voltage regulator
1 3 VOUT
VIN 1 3 V OUT
Thermal Thermal
Protection
Protection
Bandgap
Bandgap
Reference
Reference
GND 2
2
IC605: NJM2391DL1-25
Low dropout voltage regulator
IC606: NJM2885DL1-18
Low dropout voltage regulator
VIN 1 3 VOUT
Thermal
Protection
Bandgap
Reference
GND 2
IC507: MX29LV320ABTC-90
32M-bit FLASH MEMORY
WRITE
CE
CONTROL
OE PROGRAM/ERASE STATE
INPUT
WE
HIGH VOLTAGE MACHINE
RESET LOGIC
BYTE (WSM)
STATE
MX29LV320AT/B
ADDRESS FLASH REGISTER
ARRAY
LATCH
A0-A20 ARRAY
AND
SOURCE
HV
BUFFER
Y-PASS GATE COMMAND
DATA
DECODER
SENSE PGM
AMPLIFIER DATA
HV
COMMAND
DATA LATCH
PROGRAM
DATA LATCH
Q0-Q15/A-1 I/O BUFFER
IC504: ADV7322KSTZ
Multiformat 11-Bit HDTV Video Encoder
Page 105 I2
to POWER (7)_W326 STANDARD DEFINITION ADV7322
CONTROL BLOCK
COLOR CONTROL
BRIGHTNESS
DNR 11-BIT
GAMMA DAC
Page 105 G7 PROGRAMMABLE
FILTERS
O 11-BIT
to POWER (5)_W2 SD TEST PATTERN
V DAC
E
R
D 11-BIT
Y7–Y0 S
E DAC
PROGRAMMABLE
C7–C0 A
M RGB MATRIX
S7–S0 M
U
11-BIT
P
X
L DAC
I
HIGH DEFINITION N
11-BIT
G
CONTROL BLOCK DAC
HD TEST PATTERN
11-BIT
DAC
COLOR CONTROL
HSYNC
TIMING ADAPTIVE FILTER CTRL
VSYNC
GENERATOR SHARPNESS FILTER
BL ANK
2
I C
INTERFACE
CLKIN_A PLL
CLKIN_B
IC520: SN74AHCT245PWR
Octal Bus Transceiver with 3-state Outputs
DIR 1 20 Vcc
A1 2 19 OE
A2 3 18 B1
A3 4 17 B2
A4 5 16 B3
A5 6 15 B4
A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
GND 10 11 B8
IC529: ADM222ARZ
High speed RS-232 line drivers/receivers
+5V INPUT
0.1µF
V 0.1µF
C1+ CC
+5V TO +10V
0.1µF V+
VOLTAGE DOUBLER
C1–
IC528: SN74LVC2G17DCKR
C2+
+5V TO –10V
Dual Schmitt-Trigger Buffer V–
0.1µF VOLTAGE INVERTER
C2– 0.1µF
1A 1 6 1Y T1
IN T1 T1 OUT
TTL/CMOS
RS-232
INPUTS * OUTPUTS
GND 2 5 VCC T2 IN T2 T2 OUT
R1 R1 R1
2A 3 4 2Y OUT IN
TTL/CMOS RS-232
OUTPUTS INPUTS **
R2 R2
R2 OUT IN
ADM2xx EN (ADM242)
GND SHDN (ADM222, ADM242)
* INTERNAL 400k W PULL-UP RESISTOR
ON EACH TTL/MOS INPUT
** INTERNAL 5k W PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
111