Marantz SR7009/U1B - Page 114

The circuit around CX870 or CY920 is faulty.
YES
YES
YES
YES
YES
YES
Case of CY920 model
Can an output voltage (1.8V) to
IC114(DC-DC Conv.) be conrmed?
Can an output voltage (3.3V) to
Q1107(FET_SW) be conrmed?
Can an output voltage (1.8V) to
Q1101(FET_SW) be conrmed?
Can an output voltage (1.2V) to IC115
be conrmed?
Case of CX870 model
Can an output voltage (1.9V) to
IC116(DC-DC Conv.) be conrmed?
Case of CY920 model
Can an output voltage (2.5V) to
IC116(DC-DC Conv.) be conrmed?
Are the versions of the Ethernet SBL and IMG displayed in Version
Check Mode?
Is D5V_POWER (IC151 uCOM 85pin)
"Hi" ?
Is E_POWER1 (IC151 uCOM 53pin)
"Hi" ?
Is E_POWER_4 (IC151 uCOM 56pin)
"Hi" ?
Is E_POWER4 (IC151 uCOM 56pin)
"Hi" ?
Is E_POWER2 (IC151 uCOM 54pin)
"Hi" ?
The circuit of D5V_POWER between
IC151 and IC114 are faulty.
The circuit of E_POWER1 between
IC151 and Q1107 are faulty.
The circuit of E_POWER_4 between
IC151 and Q1101 are faulty.
The circuit of E_POWER4 between
IC115 and IC151 are faulty.
The circuit of E_POWER2 between
IC151 and IC116 are faulty.
The circuit around IC114(DC-DC.
Conv.) is faulty.
The circuit around Q1107(FET_SW) is
faulty.
The circuit around Q1101(FET_SW) is
faulty.
The circuit around IC115(DC-DC.
Conv.) is faulty.
The circuit around IC116(DC-DC.
Conv.) is faulty.
The Ethernet software is faulty.
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
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