Denon AVR-X4200W Service Manual page 111

Can the output voltage (3.3 V) to Q1107
(FET-SW) be confirmed?
Can the output voltage (1.2 V) to IC115
(DC-DC Conv.) be confirmed?
Can the output voltage (2.5 V) to IC116
(DC-DC Conv.) be confirmed?
Can the output voltage (1.8 V) to IC114
(DC-DC Conv.) be confirmed?
Can the NET1.8V output voltage (1.8 V) to
Q1101 (FET-SW) be confirmed?
Are the versions of the Ethernet SBL and IMG displayed in Version
Check Mode?
The circuit around CY920 is faulty.
Is E_POWER1 (IC151 uCOM 132 pin) "Hi" ?
YES
NO
Is E_POWER4 (IC151 uCOM 135 pin) "Hi" ?
YES
NO
Is E_POWER2 (IC151 uCOM 133 pin) "Hi" ?
YES
NO
Is D5V_POWER (IC151 uCOM 136 pin)
"Hi" ?
YES
NO
Is E_POWER4 (IC151 uCOM 134 pin) "Hi" ?
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
The Ethernet software is faulty.
111
The circuit of E_POWER1 between IC151
and Q1107 are faulty.
The circuit around Q1107 (FET-SW) is
faulty.
The circuit of E_POWER4 between IC115
and IC151 are faulty.
The circuit around IC115 (DC-DC.Conv.)
is faulty.
The circuit of E_POWER2 between IC151
and IC116 are faulty.
The circuit around IC116 (DC-DC.Conv.)
is faulty.
The circuit of E_POWER2 between IC151
and IC114 are faulty.
The circuit around IC114 (DC-DC.Conv.)
is faulty.
The circuit of E_POWER4 between IC151
and Q1101 are faulty.
The circuit around Q1101 (FET-SW) is
faulty.