Yamaha DRX-1 Service Manual page 158

A B
DRX-1
1
SCHEMATIC DIAGRAM
ANALOG: RGB-YUV CONVERTER
2200 A1 3200 A4 3210 C2 3214 E2
2201 A1 3207 B2 3211 D2 3215 C3
2202 A3 3208 C1 3212 C2 3218 D2
2203 A3 3209 C2 3213 D2 3219 D2
1 2
2
RGB-YUV-Conv.
14
A 15
GNDV
GNDV GNDV
3
12
11
5STBY 5NSTBY GNDV
B
I207
3207
D_R
1K 1%
4
from IO1
I211
3208 3209
D_B
1%
from IO1 560R 5K62
C
I215
3212
D_G
1%
5K62
from IO1
5 3213
1K5 1%
I213
D
3211
1K
1%
3218 I225
10R
6
E I226
3221 3222
750R 1% 2K2
U = B/2 - 0,169R - 0,331G
V = R/2 - 0,419G - 0,081B
7
1 2
158
C D
U model
3220 E3 7200-B D3 I201 A2 I207 B1 I212 C2
3221 E1 7200-C A2 I202 A3 I208 B4 I213 D1
3222 E2 7200-D A2 I203 A4 I210 B2 I214 D2
7200-A B3 7201 B4 I204 A4 I211 C2 I215 C1
3 4
5STBY 5STBY
5NSTBY
YUV_CON
I202
I201
7200-D
4
TSH95
16
13
GNDV GNDV
I203
I204
7200-C
TSH95
10
7201
PDTC124EU
9
GNDV
I210 7200-A
3
TSH95
I208
1
I212
2
8
GNDV
3215
1K
1%
I214 7200-B
5
TSH95
I216
7
3219
6
1K5 1%
GNDV
3220
1K 1%
1%
I224
3 4
E F
ANALOG: DIGITAL IN / OUT
I216 D4
1941-A A4 2472 A3
I224 E3
1941-B C4 2473 B3
I225 D2
1942 E4 2474 B3
I226 E2
1943 D4 2475 B1
1945 A4 2476 C3
1948 B4 2477 A1
2471 A3 2478 D3
1
Digital In / Out
5VDD
A
14
Vcc
5VD1 8
A
Y
Vss
7
GNDD
YUV_ON I495
from AIO1
3475
10K
5VDD
DAINCOAX
not used
B
to DAC_ADC
5VD1
B
not used
2475
I486
100n
C
GNDD
C
3478
4970
DAOUT
from DAC_ADC 470R
V_CON
to I/O 1
I489
D
D
DAOUT
from DAC_ADC
E
E
U_CON
DAINOPT
to I/O 1
to DAC_ADC
1
G H
2479 C3 3472 A2 3479 C1 4971 C2 7470-D A1
2481 E2 3473 A3 3480 C2 5470 B2 7470-E D2
2485 C4 3474 A2 3481 D2 6470 A3 7470-F D2
2486 B1 3475 A1 3482 E3 6471 C3 F4102 A4
2912 D3 3476 B3 3483 D3 7470-A C2 F4103 A4
3470 A1 3477 B1 3484 D4 7470-B C2 F4202 B4
3471 A2 3478 C1 4970 C1 7470-C C2 F4203 B4
2 3
5VD1
not used
GNDD
F4103
3
7470-D 2471
F4102
1
PC74HCU04D
3472
9
I497
A 100n
100R
GNDD GNDD GNDD
GNDD
F4203
I485
3
5470
F4202
3 4 2
2
GNDD
3476
I487
1 6
GNDD
75R
6RG
GNDD GNDD
not used
not used
2479
4971
GNDD
10u
7470-B
7470-A
I490 PC74HCU04D
PC74HCU04D
2476
I492
1 2 3 4
A Y A Y
100n
7470-C
PC74HCU04D
3480
5 6
A Y
2K2
5VDD
7470-E
PC74HCU04D
I496
3483
11 10
GNDD
A Y
560R
7470-F
F488
PC74HCU04D
13 12
A
Y
1943
GP1FA550TZ
2
VCC
GNDD GNDD
F4204
3481
1
VIN
100R
3
GND
GNDD
not used
GNDD
3482 F4205
1K
2 3
I J
F4204 D2 I490 C2
F4205 E4 I492 C3
F488 D3 I495 A1
I485 A2 I496 D3
I486 B1 I497 A2
I487 B3
I489 C1
4
DIGIO
1941-A
YKC21-3600
DIGITAL
IN
A
5
GNDD
Ground not connected
1945 to the rear plane
YKC21-3479
DIGITAL
OUT
1
B
GNDD
1948
YKC21-3416
3
2
1
GNDD
1941-B
C
YKC21-3600
4
2
5
GNDD
D
OPTICAL
OUT
5VDD
E
1942
GP1FA550RZ
1
VCC
OPTICAL
3
IN
OUT
2 GND
GNDD
4