Yamaha DRX-2 Service Manual page 177

I SCHEMATIC DIAGRAM
IOE (In/Out Extension Board)
0006 A1 1922-C C10 2250 A1 2256 B4 2262 E4
1301 E2 1923 A8 2251 A4 2257 D3 2265 A2
1920 E1 1924 A10 2252 A4 2258 D5 2266 B5
1921 D6 1925 B5 2253 B2 2259 D4 2267 B9
1922-A D10 1926-A A6 2254 C4 2260 E2 3250 A2
1922-B D10 1926-B A6 2255 C3 2261 E2 3251 A3
1 2
5VD1
5VDD
0006
BRACKET
A
GNDD
7250-6
74HCU04D
14
I251
12 1 13
7
GNDD GNDD GNDD
for DIGITAL IN only
2253
3258
B
10K
10n
7250-3
7250-1
74HCU04D
74HCU04D
I253 I254
1 1
1 2 5 6
C
7250-2
74HCU04D
3260
3 1 4
2K2
7250-5
74HCU04D
11 1 10
D
7250-4
74HCU04D
9 1 8
GNDD
F2006
F2005
1920
1 F2004
DAOUT 2
F2003
DAINCOAX 3
5251
DAINOPT 4
4201
5
E
6 F2002
1301
FMN
500mA T
GNDD
1 2
3252 A3 3258 B2 3264 D4 3273 B9
3253 A8 3259 C5 3268 E4 4201 E2
3254 A9 3260 C2 3269 E3 4207 C3
3255 B3 3261 D1 3270 E3 5250 B4
3256 A5 3262 D3 3271 B9 5251 E2
3257 A8 3263 C5 3272 B9 5253 A8
3 4
5VD1
GNDD
2251 F255
100n
I252 3252
100R GNDD GNDD GNDD
for DIGITAL IN only
GNDD
F254
5250
6RG
GNDD
GNDD
3 4
2
I255
2255 5255
3259
1 6
100n I257 75R F253
4207
5VDD
2258
GNDD
3262 100n
560R F251
3264
100R
GNDD
GNDD GNDD
5VDD 5VDD
for DIGITAL IN only
GNDD
6259
5VDD
JFJ2000
2262
1
VS
OPTICAL
100n F250
3269
3
OUT
1K0 IN
2
GND
GNDD
3 4
5254 A9 6256 D8 7250-3 C2 F2004 E1 F2203 D10
5255 C3 6257 D8 7250-4 D2 F2005 D1 F2205 E9
5257 A8 6258 E8 7250-5 D2 F2006 D1 F2301 A8
6250 A4 6259 E4 7250-6 A2 F2107 D6 F2302 A8
6254 C3 7250-1 C1 F2002 E1 F2201 D9 F2303 A8
6255 D5 7250-2 C2 F2003 E1 F2202 D9 F2304 A8
5 6 7
1926-A
F256
3 YKC21-3496
DIGITAL
IN
2
IR_OUT
1926-B
GLINK_TXD
YKC21-3496
GLINK_RXD
5
GND
DIGITAL
4
OUT
1
GNDD
1925
YKC21-3416
3
DIGITAL
2
OUT
1
GNDD
for EU ONLY
delete for DIGITAL IN
6255
JFJ1000
2
VS
OPTICAL
1
IN
OUT
3
GND
1921
F2107
7
6
V
5
U 4
3
2
Y
1
FMN
GNDA
5 6 7
F2401 A10 F253 C5 I252 A3
F2402 A9 F254 B5 I253 C2
F2403 A10 F255 A5 I254 C2
F2404 A9 F256 A5 I255 C3
F250 E4 I250 A1 I256 C1
F251 D5 I251 A2 I257 C4
8 9
for SATCONTROL only
F2301 5253 F2404
5254
3253
10R
1923 HSJ1637-010510
5
1
F2302
3254 F2403
2 4
3
3
F2303 220R
3257 F2402
2
4
1
220R
F2401
FMN
5257
GNDD GND
GND GND GNDD GNDD
1
F2202 4
6256
DF3A6.8FU
1
6.8V
F2201
GNDA 3
6257
DF3A6.8FU
1
6.8V
2
GNDA GNDA
F2205
6258
DF3A6.8FU
6.8V
GNDA
8 9
DRX-2
10
1924
A
B
C
1922-C
LPR6520-G010G
V
1922-B
LPR6520-G010G
D
U
1922-A
LPR6520-G010G
Y
E
10
177