Marantz SA-KI-PEARL-LITE/N1B, Руководство по обслуживанию

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[C] Error Messages special to USB
1. Error Message displayed as the Last Error Message
If no response is made in the communication between the USB Module U501 and the microprocessor within a
designated timeframe, the display will show the following message.
Refer to the Communication between USB Module and the microprocessor on the Communication Waveform page
and check the signal.
If the error message bellow cannot be cleared despite the unit performing normal operations properly, U501 may be
broken. If such is the case, replace U501.
If no response is made in the communication with an iPod-authenticated IC within a regulated timeframe, the display
will show the following message.
As the communication with the authenticated IC has not been established normally, ensure that the IIC signal is
communicating at a normal level when the unit is connected with an iPod.
The frequency of the IIC clock (IIC_SCL) is approximately 40 kHz only when the unit communicates with an iPod-
authenticated IC.
If no communication can be detected, check the soldering points of the microprocessor (U102), resistors (R155,
R157) and the authenticated IC (U151).
If the problem specifi c to the iPod cannot be rectifi ed, the authenticated IC (U151) may be broken. If that is the case,
replace U151.
When the iPod-authenticated IC has received error information, the display will show the following message. This
message means that the authenticated IC is communicating properly. Try connecting another iPod. If no problem
arises with another iPod, advise the user to repair the iPod.
If the same problem arises with another iPod, the authenticated IC (U151) may be broken. If that is the case, replace
U151.
When a problem arises with the processing of the iPod authentication and signature, the display will show the
following message.
If the following message appears instead of the above messages - "iPodErrorIC”, "iPodICErrorx" and "USB_Com_
Error_", try connecting another iPod.
If no problem arises, advise the user to repair the iPod.
If the error message persists, the authenticated IC (U151) may be broken. If that is the case, replace U151.
Display
Off
RPT RNDM PROG TRK SA-CD CD M FILE
USB
STRG D OFF REMAIN TTL A- B 1
o C U S B _ m _ E r r _
Display
Off
RPT RNDM PROG TRK SA-CD CD M FILE
USB
STRG D OFF REMAIN TTL A- B 1
r E i P o d r o r I I C
Display
Off
RPT RNDM PROG TRK SA-CD CD M FILE USB STRG D OFF REMAIN TTL A- B 1
C I i P o d E r r o r x
Display
Off
RPT RNDM PROG TRK SA-CD CD M FILE USB STRG D OFF REMAIN TTL A- B 1
t u E r r A h e n t i C