Diagnostic Software and Faultfinding Trees
5.
5.6.3
Digital Board
Start-up DSW
Figure 5-22
START UP DSW
NOT OK
OK
OK
OK
OK
Check EMI_PROCCLK(50MHz)
on I181
NOK
- Check IC 7100
NOK
- Check connection to PSU
- Check Power Supply
Check Power Supplies on con. 1900
(ION should be LOW)
OK
NOK
- Check IC 7202
- Check IC 7916-C
- Check IC 7801
Check that Sysclk_5505 on I819
appears earlier then Resetn_5505
is high on I202
OK
NOK
- Check IC 7202
- Check R 3266
- Check L 5200, 5201 and 5202
Check V3V3) on I272
Check VDDA(+3V3) on I275
Check VD3V3) on I252
NOK
- Check IC 7305
- Check IC 7301
- Check IC 7202
Check activity on EMI_CE3n(pin1 of IC 7305)
Check activity on ROMH_CEn(pin6 of IC 7305)
Check activity on EMI_OEn(pin29 of IC 7301)
NOK
- Check IC 7202
- Check IC 7302 and IC 7304
- Check IC 7100
Check if FLASH_OEn is LOW on I245
Check if EMI_RWn is HIGH(pin133 of IC7202)
OK
NOK
- Check IC 7202
- Check L 5200
Check if F201 is HIGH and I201 is LOW
Check if I208 is LOW and I209 is HIGH
OK
OK
NOK
- Check L 5300
- Check L 5302
NOK
- Check Jumper 4206
Check V3V3) on I306
Check VD3V3) on I310
OK
NOK
- Check L 5100
- Check L 5101
Check VC3V3) on I100
Check VCC3_V3V3) on I141
OK
OK
Check for short circuits or open circuits on the
IC pins which are connected to the EMI-bus
OK
NOK
- Check IC 7202
Check TCK (HIGH) on I247
Check TDI (HIGH) on I248
Check TMS (HIGH) on I249
Check TRST (LOW) on I250
START UP DSW
OK
OK
Check LOW pulses on EMI_CE3n
on pin 126 of IC 7202
NOK
- Check IC 7202
- Check IC 7305
Check if service pin is LOW on testpoint I207
CL 16532095_086.eps
150801
Summary of Contents for DVDR980/001
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