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KP-51DS1U KRM-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.
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Time/seconds 50 60
70
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100
IKR Return A
A. B. C. D. E. F.
B
C
D
E
F
IKR Return first goes high after 12 seconds Micro begins checking IKR Return status 20 seconds after power on Micro detects IKR return=0 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.) Micro detects that IKR=1; LED continues to flash 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.
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