Sony KP-51DS1U Service Manual ▷ View online
– 5 –
KP-51DS1U
K
RM-892
Protection Error (Error 2):
Once every main loop (approximately 200ms OSD mode, 50ms text or menu mode), the micro checks the protection pin (pin 66). If the
protection pin is high 6 successive times, a protection error is diagnosed. The protection pin is not checked during the first 3-4 seconds
after AC on.
If this error is diagnosed, the respective NVM register will be updated and the set goes straight into diagnostic standby with 2 flashes
- no reset is attempted.
AKB Error (Error 5):
Once every main loop the micro checks the AKB stability by reading the IKR return from the jungle. IKR=1 means that AKB is stable,
IKR=0 means that AKB is unstable. If the AKB status is unstable for 10 seconds, an AKB error is diagnosed. AKB stability is not
checked during the first 20 seconds after AC on.
If this error is diagnosed, the respective NVM register will be updated and the response LED will flash 5 times continually, but the set
will not go into standby. If the AKB status becomes stable, and remains stable for 10 seconds, the LED will stop flashing.
A.
IKR Return first goes high after 12 seconds
B.
Micro begins checking IKR Return status 20 seconds after power on
C.
Micro detects IKR return=0
D.
Micro detects that IKR has been 0 for 10 seconds; NVM counter is incremented and the LED starts flashing (flashes
5 times, off for 2 seconds, flashes 5 times, etc.)
E.
Micro detects that IKR=1; LED continues to flash
F.
Micro detects that IKR has been high for 10 seconds; LED stops flashing.
Startup Diagnostic Errors (Errors 6-18, 27, 29-32):
These errors are checked for during the power up sequence before attempting to retrieve data from the NVM.
6 - SCL pin low
7 - SDA pin low
8 - Both the SCL and the SDA pin are low
9 - No acknowledge from the jungle (CXA2076)
10 - No acknowledge from the video switch (CXA2040)
11 - No acknowledge from the tuner
12 - No acknowledge from the MSP
13 - No acknowledge from the NVM
14 - No acknowledge from the CXA2089 video switch (DS10 & DX10)
16 - No acknowledge from the CXA1875 Port Expander (DS10 & DX10)
18 - No acknowledge from the Dynamic Convergence (CXA8070) : Not used for RE-2D
27 - M3L_TXD pin low after Compact Text RAM test
29 - M3L_TXD pin low
30 - M3L_RXD pin low
31 - M3LEN pin low
32 - Compact Text RAM test fail
If any of these errors are detected, the respective NVM register will be incremented. The software will then carry on with the power up
sequence.
0
10
A
B
C
D
E
F
20
30
40
50
60
70
80
90
100
IKR
Return
Return
Time/seconds
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KP-51DS1U
K
RM-892
General I
2
C Device Run-time Errors (Errors 19-23):
19 - No acknowledge from Jungle when attempting to initialize
20 - No acknowledge from Jungle when attempting to read registers
21 - AV Switch cannot complete reset during initialization
22 - No acknowledge from AV Switch when attempting to read registers
23 - No acknowledge from NVM when attempting to read or write
If any of these errors are detected, the respective NVM register will be incremented and the software will carry on.
Compact Text Run-time Errors (Errors 26, 28, 33 & 34):
26 - M3L_TXD pin low when checking register 81 (implies that no communication was possible)
28 - M3L_TXD pin low when attempting to initialize (implies that no communication was possible)
33 - Compact Text RAM test fail during initialization of devices
In the case of these errors, the ‘device reset’ pin will be held low for 60ms, causing a hardware reset of Compact Text. Following this
reset, a longer timeout will be allowed for the M3L bus to recover. If the error still exists, the NVM register will be incremented and the
software will carry on.
A.
IKR Return first goes high after 12 seconds
B.
Micro begins checking IKR Return status 20 seconds after power on
C.
Micro detects IKR return=0
D.
Micro detects that IKR has been 0 for 10 seconds; NVM counter is incremented and the LED starts flashing (flashes
5 times, off for 2 seconds, flashes 5 times, etc.)
E.
Micro detects that IKR=1; LED continues to flash
F.
Micro detects that IKR has been high for 10 seconds; LED stops flashing.
34 - Register 81 check fail, but M3L_TXD pin high (implies that Compact Text has either reset or
become corrupted).
In this case, the ‘device reset’ pin will be held low for 60ms, causing a hardware reset of Compact Text. Compact Text will then be re-
initialized and the NVM counter updated. This is the same as for errors 26, 28 and 33 except that the M3L bus timeout is not changed.
Also, during the reset, Compact Text OSD will be disabled (using pin 59 of the micro). Only when the sync registers have been
refreshed twice, will the OSD be enabled.
MSP and DSP Run-time Errors (Errors 24 & 25):
Error 24 can be caused by any of the following:
-
After MSP initialization, Scart Prescale Register check fail (implies that the MSP has either reset or become corrupted).
-
MSP fails to acknowledge reset instruction
-
Scart Prescale Register check fail (implies that the MSP has either reset or become corrupted).
Error 25 is caused by:
-
DSP test byte corrupted (implies that the DSP has either reset or become corrupted).
For both of these errors, the software will refresh the MSP and DSP registers. If the errors still exist, the NVM counter will be
incremented, and the software will carry on.
A
B
Device
Rest Pin
C
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KP-51DS1U
K
RM-892
Error Display Mode
Error Display Mode is entered by the following sequence of commands:
Standby
→
Information
→
Digit 5
→
Volume Down
→
TV
This mode will display a special menu, which will list all possible errors and the number of occurrences of each error (0 – 255, as stored
in the NVM). There will also be a display of the current error (00 if no error). This display mode will appear as follows:
ERROR DISPLAY MODE
Current Error Code = 00
Error Code
Occurrences
Error Code
Occurrences
2
2
19
0
3
—
20
0
4
—
21
0
5
0
22
0
6
0
23
0
7
0
24
0
8
0
25
4
9
0
26
5
10
0
27
89
11
0
28
3
12
0
29
0
13
0
30
0
14
0
31
0
15
3
32
0
16
0
33
3
17
0
34
38
18
6
Whilst in this mode, the number of occurrences of each error can be reset to 0 by TT08.
Only AC off or standby off can exit this mode.
The Current Error Code can also be read by using a TV Error Reader (I2C slave address 42H). This device simply receives 1 data byte,
which is the error number in binary coded decimal form.
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KP-51DS1U
K
RM-892
TT command table
TT Mode is available by pressing the test key twice. It is exited by pressing 0 twice, or by pressing the Test key, or by pressing the TV
key or by switching the set into standby.
Pressing the Menu key when in TT mode enters in main Test Menu. Pressing the Menu key again enters in the User Menus.
TT Modes 40-49 require TV to be in program 59 before the command is accepted. Some Test models are dependant upon the model.
TT command
Meaning
<Menu>
Enter into service menu
00
Exit from TT mode
01
Set picture level to maximum
02
Set picture level to minimum
03
Set volume to 35%
04
Set volume to 50%
05
Set volume to 65%
06
Set volume to 80%
07
Ageing mode enable / disable
08
Shipping condition
09
Reset language select menu on power up
11
Sub Picture adjustment (use red / yellow)
12
Sub Colour adjustment (use red / yellow)
13
Sub Brightness adjustment (use red / yellow)
14
Text H-Position
16
Picture level 50 %
21
Destination A/D (East Menu / West Text)
22
Destination L (West Menu / West Text)
23
Destination E ( West Menu / West Text)
24
Destination U (West Menu / West Text)
25
Destination D (East Menu / Greek Text)
26
Destination B (East Menu / West Text)
27
Destination K (East Menu / East Text)
28
Destination R (Russian Menu / Russian Text)
32
Digital Status on/off
41
Re-initialize NVM
42
Re-initialize Geometry settings
43
Default programme info in NVM with Pencoed factory channel setup
44
Default favourite pages to 100, 101, 102, 103
45
Switch off all Channel Locks
46
Dealer commander mode (pending)
47
Default MSP Settings
48
Restore NVM test byte Undo TT49
49
Delete NVM test byte Sets virgin NVM
52
Noise on Left Speaker
53
Noise on Right Speaker Only
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