Yamaha DRX-1 Service Manual page 171

A B
1
SCHEMATIC DIAGRAM
ANALOG: RGB-YUV-CONVERTER
2200 A1 3202 B2 3208 C1 3214 D2 3222 E2
2201 A1 3203 B2 3209 C1 3215 E2 3223 D4
2202 A3 3204 B3 3210 C2 3218 E1 3224 E4
2203 A3 3205 B3 3211 D1 3219 E2 3225 E4
3200 A4 3206 B3 3212 D1 3220 E3 4201 D4
3201 A1 3207 C1 3213 D1 3221 E1 4202 D4
1 2
2
RGB-YUV-Conv.
5STBY
I201
14
A
15
GNDV
GNDV GNDV
3
I207 I206
3201
1K
1%
5STBY 5NSTBY
B
GNDV GNDV
4
I210
3207
RCIN_SC2
1K5 1%
C from IO1
3208 I211 3209
BIN_SC2
1%
from IO1 6K8 1% 5K62
I212
5
GNDV
I213
I214
D 3211
1K5 1%
I215
3212
GIN_SC2
4K7 1%
from IO1
3213
4K7 1%
6
GNDV
E
3218 I225 3219
1K5 1% 1K5 1%
I226
3221 3222
1K2 4K7 1%
7
1 2
C D
A, B, G model
4203 D4 I201 A2 I207 A1 I213 D1
7200-A C3 I202 A3 I208 B3 I214 D2
7200-B D3 I203 A4 I209 C2 I215 D1
7200-C A3 I204 A4 I210 C2 I216 D3
7200-D A2 I205 A3 I211 C1 I224 E2
7201 B4 I206 A2 I212 C2 I225 E2
3 4
YUV_CON
5STBY
5NSTBY
I202
7200-D
4
TSH95
16
13
GNDV GNDV
I203
7200-C I204
12
TSH95
I205
10
7201
11
9 PDTC124EU
GNDV
3204
1K 1%
3205 I208
not used for SA7118
15K
3206
I209
1%
750R
7200-A
3
TSH95
1
2
8
7200-B
5
TSH95
7
I216
6
3223
100R
3224
100R
I224
3225
100R
3220
1K 1%
Y` = R - V x 1,402
U = B/2 - 0,169R - 0,331G
V = R/2 - 0,419G - 0,081B
3 4
E F
ANALOG: DIGITAL IN / OUT
I226 E2
1941-A A4 2471 A3 2481 E2
1941-B C4 2472 A3 2483 A1
1942 E4 2473 B3 2484 D3
1943 D4 2474 B3 2485 B4
1945 A4 2477 D3 2486 B1
1948 B4 2479 C3 3427 A2
2470 C3 2480 B1 3428 A2
1
Digital In / Out
5VDD
7470-D
5VD1 PC74HCU04D
14
8 Vcc 9
A
Y
Vss
A I495
A
7
GNDD
GNDD
3491
YUV_ON
5VDD
from AIO1
10K
I485
not used
DAINCOAX
to DAC_ADC
5VD1
not used
B B
2480
I497
100n
GNDD
PC74HCU04D
C
C 3490
4470
1
DAOUT
from DAC_ADC 470R
I489
D
D
3497
DAOUT
from DAC_ADC 100R
A_G
to I/O 1
A_R
to I/O 1 E E
A_B
to I/O 1
DAINOPT
to DAC_ADC
1
G H
3429 D3 3494 B3 4471 C2 7470-D A1 F4204 D3
3443 D4 3495 C2 5470 B2 7470-E C2 F4205 E4
3456 B1 3496 C1 6470 A3 7470-F D2 F488 D4
3490 C1 3497 D2 6471 C3 F4102 A4 I485 A2
3491 A1 3498 E3 7470-A C2 F4103 A4 I486 D3
3492 A2 3499 A1 7470-B C2 F4202 B4 I487 B3
3493 A3 4470 C1 7470-C C2 F4203 A4 I489 C1
2 3 4
5VD1 GNDD
not used
1941-A
YKC21-3600
F4103
3
2471
3428
F4102 1
100R
100n
I496
GNDD
GNDD GNDD GNDD GNDD
1945
YKC21-3479
F4203
3
5470
2473 3494 F4202
I487
3 4 2
75R
150p
2
GNDD
1 6
GNDD
6RG
GNDD GNDD GNDD GNDD
not used
not used
2479
4471
10u
7470-B
7470-A
I490
PC74HCU04D
2470
I492
2 3 4
A Y A Y
100n
7470-C
PC74HCU04D
3495
5 6
A
Y 5VDD
2K2
7470-E
PC74HCU04D
I486
3429
11 10
GNDD
A Y
560R F488
7470-F
PC74HCU04D
13 12
A Y
GP1FA550TZ
2
VCC
GNDD GNDD
F4204
1
VIN
3
GND
GNDD
not used 5VDD
GNDD
1
VCC
3498 F4205
3
GND
OUT
1K
2
GNDD
2 3 4
I J
DRX-1
I490 C2
I492 C3
I495 A1
I496 A2
I497 B1
DIGIO
DIGITAL
IN
A
5
Ground not connected
to the rear plane
DIGITAL
OUT
1
B
1948
YKC21-3416
3
2
1
GNDD
1941-B
YKC21-3600
C
4
2
5
GNDD
1943
D
OPTICAL
OUT
E
1942
GP1FA550RZ
OPTICAL
IN
171