Diagnostic Software And Troubleshooting; Dealer Script; Contents Of Dealer Script - Yamaha DVD-S530 Service Manual

DIAGNOSTIC SOFTWARE AND TROUBLESHOOTING

1. Dealer Script

1.1 Purpose of Dealer Script
The dealer script can give a diagnosis on a standalone
DVD player, no other equipment is needed to perform a
number of hardware tests to check if the DVD player is
faulty. The diagnosis is simply a "error" or "pass"
message. No indication is given of faulty hardware
modules. Only tests within the scope of the diagnostic
software will be executed hence only faults within this
scope can be detected.
Nucleus
Display Nucleus
Countdown Number
6 6
5 12
4 13
3 11
2 15
1 16
Dealer Script
Press 2 keys simultaneously
<OPEN/CLOSE> + <PLAY>
Connect to mains.
During the test, the following display
is shown: the counter counts down
from the number of nuclei to be run
before the test finishes. Example:
SET O.K.?
Nucleus
Name
PapChksFl
PapI2cDisp
PapS2bEcho
PapI2cNvram
PapNvramWrR
CompSdramWrR
NO
YES
To exit DEALER SCRIPT, disconnect from mains

1.2 Contents of Dealer Script

The dealer script executes all diagnostic nuclei that do not
need any user interaction and are meaningful on a
standalone DVD player.
The nuclei called in the dealer script are the following (the
number after each nucleus name corresponds with the
number being on the local display when the nucleus is
executed during the dealer script):
Description
Calculate and verify checksum of FLASH memory
Checks the I2C interface with the slave processor on
the display board
Checks the I2C interface to the basic engine
Checks the I2C interface with the NVRAM
Pattern test of all locations in the NVRAM
Pattern test of all locations in the SDRAM(s)
Fig. 1
Fig. 2
DVD-S530/DV-S5550
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