Diagnostic Software And Faultfinding Trees; End User/Dealer Script Interface - Philips DVDR980/001 Service Manual

EN 38 5. DVDR980-985 /0X1

5. Diagnostic Software and Faultfinding Trees

Due to the complexity of the DVD recorder, the time to find a
defect in the recorder can become long. To reduce this time,
the recorder has been equipped with Diagnostic and Service
software (DS). The DS offers functionality to diagnose the
DVDR hardware and tests the following:
• Interconnections between components
• Accessibility of components
• Functionality of the audio and video paths
This functionality can be accessed via several interfaces:

1. End user/Dealer script interface

2. Player script interface
3. Menu and command interface
5.1 End User/Dealer Script Interface
5.1.1 Description
The End user/Dealer script interface gives a diagnosis on a
stand alone DVD recorder; no other equipment is needed.
During this mode, a number of hardware tests (nuclei) are
automatically executed to check if the recorder is faulty. The
diagnosis is simply a "fail" or "pass" message. If the message
"FAIL" appears on the display, there is apparently a failure in
the recorder. If the message "PASS" appears, the nuclei in this
mode have been executed successfully. There can be still a
failure in the recorder because the nuclei in this mode don't
cover the complete functionality of the recorder.
Counter Nucleus Name
22 104 HostdSdramWrR
21 106 HostdDramWrR
20 123 HostdI2cNvram
19 202 SAA7118I2c
18 200 VideoEncI2c
17 207 AudioEncI2c
16 204 AudioEncAccess
15 203 AudioEncSramAccess
14 205 AudioEncSramWrR
13 206 AudioEncInterrupt
12 300 VsmAccess
11 303 VsmInterrupt
10 302 VsmSdramWrR
9 1400 Clock11_289MHz
8 1401 Clock12_288MHz
7 601 BeS2Bengine
6 500 DisplayEcho
5 700 AnalogueEcho
4 711 AnalogueNvram
3 706 AnalogueTuner
2 901 LoopAudioUserDealer
1 906 LoopVideoUserDealer
Diagnostic Software and Faultfinding Trees
5.1.2
Description
checks all memory locations of the 4MB SDRAM
checks all the DRAM connected to the microprocessor of the digital board
checks the data line (SDA) and the clock line (SCL) of the I2C bus between the host decoder
and NVRAM
checks the interface between the Host I2C controller and the AVENC SAA7118 Video Input
Processor
checks the interface between the host I2C controller and Empress SAA6752
checks the I2C connection between the host decoder and Empress SAA6752
tests the HIO8 interface lines between the host decoder and the audio encoder
checks the access of the SRAM by the audio encoder (address and data lines).
tests the SRAM connected to the audio encoder
tests the interrupt line between the host decoder and the audio encoder
checks whether the VSM interrupt controllers and DRAM are accessible
checks both interrupt lines between the VSM and the host decoder
tests the entire SDRAM of the VSM
switches the A_CLK of the micro clock to 11.2896 MHz
switches the A_CLK of the micro clock to 12.288 MHz
checks the S2B interface with the Basic Engine by sending an echo command
checks the interface between the host processor and the slave processor on the display
board
checks the interface between the host processor and the microprocessor on the analogue
board
checks the NVRAM on the analogue board
checks whether the tuner on the analogue board is accessible
This nucleus tests the components on the audio signal path The host decoder
- The analogue board
- The audio encoder
- The VSM
On the analogue board the audio is internally looped back to the digital board
Nucleus for testing the components on the video signal system path:
- The VIP
- The video encoder
- The VSM
- The host decoder
- The analogue board
On the analogue the video signal is internally routed back to the digital board.
Contents
Unplug the power cord
Hold key <PLAY> pressed
while you plug the recorder
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:
NO
SET O.K.?
YES
To exit DEALER SCRIPT, unplug the power cord
Figure 5-1
The End use/Dealer script executes all diagnostic nuclei that
do not need any user interaction and are meaningful on a
standalone DVD recorder. The nuclei called in the End user/
Dealer script are the following:
CL 16532095_068.eps
150801