Yamaha DVD-S510, Service Manual, Page: 10 / 78

DVD-S510/DV-S5350
9
Press 2 keys simultaneously
<OPEN/CLOSE> + <PAUSE>
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.?
YES
NO
To exit DEALER SCRIPT ,disconnect from mains.
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.
■
DIAGNOSTIC SOFTWARE : SCRIPT INTERFACES
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):
Nucleus Description
VideoColSetupComm 9 Checks the I2C interface with the RGB video processor on the Audio/Video board
(only for DVD players with RGB video processor).
VideoScartSwComm 8 Checks the I2C interface with the scart switch on the Audio/Video board
PapChksFl 7 Calculate and verify checksum of FLASH memory.
PapDramWrR 6 Pattern test of all locations in the DRAM(s).
PapI2cDisp 5 Checks the I2C interface with the slave processor on the display PCB.
PapS2bEcho 4 Checks the I2C interface to the basic engine.
PapI2cNvram 3 Checks the I2C interface with the NVRAM.
PapNvramWrR 2 Pattern test of all locations in the NVRAM
CompSdramWrR 1 Pattern test of all locations in the SDRAM(s).