Marantz SA12 - 6. Wiring and Block Diagrams

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Testing of I2C communication to DAC board can be done using diagnostic software.
Diagnostic Software
DAC BOARD
I2C COMMUNICATION
Clock Internal
Clock External
Clock Freq. SACD
Clock Freq. CDDA
DAC MODE
MENU
DAC FILTER
MENU
DAC MUTE
MENU
Mute ON: AMUTE = H
Mute OFF: AMUTE = L
Check QD21, QD32, DAC's
Filter SACD: SACD ACT = H
Filter Non-SACD: SACD ACT = L
In this menu, I2C Communication to DAC's is tested
Check DAC's QD41, QD51, QD61.
SACD: CLK FRQSEL = L
DDA: CLK FRQSEL = H
Internal : CLK SEL = H
External: CLK SEL = L (0V)
Check QD21, QD04, QD03
Check QD21, QD02, QD05
Check QD21, filter control circuit FILT1, FILT2
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
See MENU MODE INTERFACE to put set in DSW mode
Select 2: Dac Board menu
I2C OK