Sony KP-51DS1U, Руководство по обслуживанию

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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