Yamaha DRX-1 Service Manual page 49

DSW VSM TESTS
Start Diagnostic Software
and select Command mode
VSM Interconnection Test
Command: 304
SDRAM Access Test
Command: 301
SDRAM Write/Read Test
Command: 302
VSM Interrupt Test
Command: 303
VSM Connection to analog board Test
Command: 305
VSM PART OK
3. Digital Board-5
NOK
OK
NOK
OK
NOK
OK
NOK
OK
NOK
OK
Fig. 8
- Check IC 7100
- Check IC 7101
- Check IC 7100
- Check IC 7101
- Check IC 7100
- Check IC 7101
- Check IC 7100
- Check connection to analog
board
DRX-1
49