Service Test Levels - Grundig GDV Modul 1 Serviceanleitung

GDV Modul 1

3. Service Test Levels

The service test levels 1 to 5 cannot be called up manually. They are
called up automatically as a function of the unit's equipment when
starting the PC system test.
1 (BasicSpAcc)
This is a Basic Diagnostic Nucleus required for correct operation of the
Diagnostic Software.
Checks and initialises RS232 port and outputs a message that the
Diagnostic software has been started.
2 (BasicInterconDram, BasicInterconSdram)
Interconnection test of the address/data lines from and to the processor.
This nucleus can detect stuck at fault and permanent coupling errors in
the address lines and will give an indication which lines are faulty.
3 (BasicDramWrR)
This is a Basic Diagnostic Nucleus required for correct operation of the
Diagnostic Software.
It performs a pattern test (checkerboard) of only that part of the DRAM
which is required by the Diagnostic Software. It automatically includes
a test of the data lines in which stuck at faults and permanent coupling
errors can be detected.
Note: This test will only work when a DRAM is available.
4 (BasicSdramWrR)
This is a Basic Diagnostic Nucleus required for correct operation of the
Diagnostic Software. It performs a pattern test (checkerboard) of only
that part of the SDRAM which is required by the Diagnostic Software.
It automatically includes a test of the data lines in which stuck at faults
and permanent coupling errors can be detected.
5 (BasicSramWrR)
This is a Basic Diagnostic Nucleus required for correct operation of the
Diagnostic Software. It performs a pattern test (checkerboard) of the
internal SRAM of the STi5505 (IC7200).
6 (PapChksFlash)
Calculate and verify checksum FLASH
7a (PapUclkAclkCdda)
Diagnostic Nucleus PapUclkAclkCdda Switches clock A_CLK from the
microclock to 11.2896MHz (CD_DA).
Correct operation cannot be detected by the Diagnostic Software but
must be checked with external equipment (e.g. a frequency counter at
testpoint F703).
Note: This nucleus will only work if the external clock is enabled.
7b (PapUclkAclkDvd)
Diagnostic Nucleus PapUclkAclkDvd Switches clock A_CLK from the
microclock to 12.2880MHz (DVD).
Correct operation cannot be detected by the Diagnostic Software but
must be checked with external equipment (e.g. a frequency counter at
testpoint F703).
Note: This nucleus will only work if the external clock is enabled.
9 (PapDramWrR)
Pattern test (checker board) of all locations in the DRAM(s). This
Nucleus can detect stuck at fault and permanent coupling errors in a
DRAM chip and will give an indication if and which DRAM chip is faulty.
The conclusion of this test are only valid under the assumption that the
access to the DRAM is OK.
Note: This test will only work when a DRAM is available.
10 (PapFlashWrAcc)
Reads out the Chip Identification Number. This nucleus tests the write
access by writing a defined sequence of data to the FLASH chip, to be
able to read the FLASH ID.
Note: If the diagnostic software runs from FLASH, this test will hang.
By writing to FLASH memory, the FLASH output-enable-pin is set high
(output disabled) and the code which sits in FLASH memory can not
continue to be executed. However, if the test hangs the output enable
pin is high, and the test apparently was successful.
11 (PapI2cNvram)
Checks the I2C interface with the NVRAM by reading from an arbitrary
address.
12 (PapI2cDisp)
Checks the I2C interface with the slave processor on the display PWB
with the echo command.
GRUNDIG Service
13 (PapS2bEcho)
Checks the S2B interface to the Drive Mechanism with an 'echo'
command.
14 (PapS2bPass)
Switches the RS232 port and the S2B port in pass-through mode. The
only way to exit this nucleus is via disconnected the DVD player from
the mains.
15 (PapNvramWrR)
Non destructive pattern test (checker board) of all locations in the
NVRAM. This nucleus can detect stuck at faults and permanent
coupling errors in the NVRAM chip.
16 (CompSdramWrR)
Pattern test (checker board) of all locations in the SDRAM. This
Nucleus can detect stuck at fault and permanent coupling errors in an
SDRAM chip and will give an indicates if the SDRAM chip is faulty. The
conclusion of this test is only valid under the assumption that the
access to the SDRAM is OK.
18a (AudioDeempOn)
Diagnostic Nucleus AudioDeempOn switches the audio de-emphasis on.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
18b (AudioDeempOff)
Diagnostic Nucleus AudioDeempOff switches the audio de-emphasis off.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
19a (AudioMuteOn)
Diagnostic Nucleus AudioMuteOn switches the audio mute on.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
Note: The audio will be muted by the DAC.
19b (AudioMuteOff)
Diagnostic Nucleus AudioMuteOff switches the audio mute off.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
Note: The audio will be muted by the DAC.
20a (AudioPinkNoiseOn)
Diagnostic Nucleus AudioPinkNoiseOn will generate internally on the
STi5505 a pinknoise which will be passed to the DAC were it is
converted to an analogue audio signal.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
20b (AudioPinkNoiseOff)
Diagnostic AudioPinkNoiseOff will switch off the pinknoise generated
with AudioPinkNoiseOn.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
21a (AudioSineOn)
Nucleus AudioSineOn will generate a sine signal of 1kHz on the
analogue output. The sine signal digital data are stored in the audio
buffer in SDRAM, passed through the audio decoder and without any
further processing to the audio DAC were it is converted to an analogue
audio signal.
The signal can be stopped by disconnect the DVD player from the
mains.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
21b (AudioSineBurst)
Nucleus AudioSineBurst will generate a sine signal of 1kHz on the
analogue output that lasts for about four seconds. The generation of
the signal is the same as in AudioSineOn.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
23a (VideoColDencOn)
Diagnostic Nucleus VideoColDencOn enables colour bar in the DENC
in the STi5505.
Correct operation cannot be detected by the Diagnostic Software but
must be checked externally.
Service Test Programme
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