Yamaha DRX-1 Service Manual page 65

POWER PART CHECK DVIO
USE DVIO BOARD CIRCUIT DIAGRAMS 1 2, 3, 4 AND 5 AND DVIOTOPVIEWTESTPOINTS
Power On and exit
+5V on testpoint F536
+3V3 on testpoint F531
+5V_PROC on testpoint F212
PSEN(+5V) on testpoint F203
+3V3_FPGA on testpoint F311
+3V3_FPGA_CONF on testpoint F312
+3V3_SRAM on testpoint F313
+3V3_PLL on testpoint F325
+3V3_IEEE_PLL on testpoint F138
+3V3_IEEE_A on testpoint F139
+3V3_IEEE_D on testpoint F140
+3V3_LINK on testpoint F141
+Vcc_DV_RAM(+3V3) on testpoint F417
+35V_DV_EDO(+3V3) on testpoint F425
+3V3_DV on testpoint F416
6. DVIO Board-1
stand-by mode
OK
OK
OK
OK
OK
OK
OK
Power Part OK
Fig. 22
Check connector 1500
NOK
to Digital board
Check L 5200
NOK
Check IC 7203
Check IC 7204
NOK
Check IC 7208
Check L 5302
NOK
Check L 5303
Check L 5304
Check L 5106
Check L 5109
NOK
Check L 5110
Check L 5103
Check L 5404
NOK
Check L 5403
Check L 5402
DRX-1
65