Sony DVP-NS300 Training Manual page 31

Figure 6-1d shows the Pins for "Chip Select" of the System Controller.
Check the source of the signal if the chip select pins do not carry any signal and/or if they are constantly at a fixed
voltage.
Pin 190 (HAD23) of
IC503 /
Figure 6-1e shows the flow of INT (Interrupt) signal between the ICs.
Note the interrupt pulse on the CDT screen shot.
If the ICs are different, IC no. marked in red = NS700
•Destination IC has carried out the instruction
•Waiting to send data
(No Clock / No CS from Slave to Master)
IC302
ARP
RF
Servo
IC503 /
AV
decoder
Trouble Shooting : No Test Mode Menu (
X101
IC107 / 106 (Flash)
XAVDCS2
502
Pin 191(HAD22)
XAVDCS3
of IC503 / 502
Pin23 (XCS)
IC302 ARP
Pin 24(HCS)
CXD9635R
Pin 25 (XWAT)
FIGURE 6-1d - NO TEST MODE (CON'T)
Trouble Shooting : No Test Mode Menu - 33Mhz output
INT signal Check
3.3V
21 17
INT 1 = "H"
3.3V
22 18
INT 2 = "H"
48
84
56
57
502
INT 0 = "H"
223 16
FIGURE 6-1e - NO TEST MODE (CON'T)
If the ICs are different, IC no. marked in red = NS700
53
54
IC103/IC104
57
CE
58
CS0X
59
CS1X
60 CS2X
61 62 63
INT 4 = "H"
IC103 / 104
INT 5 = "L"
SYSCON
MB91307APFV-
INT 6 = "H"
29
)
33Mhz output OK
SYSCON
64 65 66 67 68
Time:
20 µS
Level:
1 V
25
26
27
IC104 /
51
IFBSY
404
27
20
IF
78
CON
21
107
IC701 / 601
AUDIO
DSP
107
22
6. Troubleshooting