Yamaha DVD-C740, Руководство по обслуживанию

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DVD-C740/DV-C6660
DVD-C740
/DV-C6660
■
DIAGNOSTIC SOFTWARE
1 Dealerscript
1.1 Purpose of Dealer Script
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
Figure 1 Dealer script nuclei
Figure 2 Dealer Script
9 6 PapChksFl
8
Checks the I2C interface with the slave processor
on the Display board
13
Press 2 keys simultaneously
<OPEN/CLOSE> + <PLAY/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
Display
Countdown
Nucleus
Number
Nucleus Name Description
Calculate and verify checksum of FLASH memory
12 PapI2cDisp
7
92c ChangerI2cExp
Checks the I2C interface with the IO expander
on the Buffer board
6 29a
PapI2cLedExp
Checks the I2C interface with the IO expander
on the Display board
5
PapS2bEcho Checks the I2C interface to the basic engine
4 11
PapI2cNvram
Checks the I2C interface to the basic engine
3 15
PapNvramWrR Pattern test of all locations in the NVRAM
2 16 Pattern test of all locations in the SDRAM(s)
1
63
FURORERSdramWrRLow
Pattern test of all locations in the SDRAM(s)
CompSdramWrR
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 an "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.