NAD T515AH, Руководство по обслуживанию

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3-5
NO
NO
YES YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
A
RESET or Power On.
Flash Memory operates
properly?
Show LOGO?
Does Tray move inside when
it is not at closed position?
B
Check connection lines between
FLASH & ZR336888 and the FLASH
access time whether is suitable or not.
SDRAM works properly?
Check connection lines
between SDRAM & ZR36888
and the SDRAM is damaged.
ZR36882 VIDEO outputs
properly? Check the related circuit of
ZR36888
Have TV signal output?
Check AV cable connection
to TV set.
Normal OUTSW & INSW
signals?
Check the filtering and amp
circuit of TV signal.
Check the load OPEN &
CLOSE switch
Normal OPEN & CLOSE
signal?
Check the Tray control IO
pins on ZR36888 &
AM5869S
Normal LOAD+ & LOAD
signal?
Check the cable connection
between main PCBA and
loader.
Check the Tray control
amplifying circuit on Motor
driver.