Denon AVR-3312

91
CheckoperationofIC121(ADV7844).
(25) Check power supply.
Are 1.8V supplied to L1202/L1203/L1204/L1205?
Are 3.3V supplied to L1201/L1206/L1207?
The power supply circuitry is defective.
NO
YES
(27) Check RESET.
Is RESET waveform conrmed in TP[7844_RESET], when power
is turned on? (If the waveform is not the reference waveform,
proceed to NO.)
The RESET circuitry or IC121 is defective.
NO
YES
YES
(26) Check xtal oscillator.
Is oscillation of X1201(28.6363MHz) transmitted?
The X1201 or IC121 is defective.
NO
YES
(28) Check output signal.
Is waveform con rmed in TP[DE/VSYNC/HSYNC/PCLK].
(If the waveform is not the reference waveform, proceed to NO.)
The IC121 is defective.
NO
YES
YES
YES
CheckoperationofIC151(ADV8002)
(30) Check xtal oscillator.
Is oscillation of X1501(27MHz) transmitted?
(31) Check RESET.
Is RESET waveform conrmed in TP[8002_RESET], when power
is turned on? (If not reference waveform, proceed to "NO".)
The pattern and circuit from the HDMI connector (JK151/JK152) to
the IC(IC151) is defective, or HDMI output circuitry is defective.
(29) Check power supply.
Are 1.8V supplied to L1501/L1502/L1503/L1504/L1505/C1529/
C1561/L1509/L1513/L1518/L1521/L1522?
Are 3.3V supplied to L1508/L1510/L1511/L1514?
The power supply circuitry is defective.
The X1501 or IC151 is defective.
The RESET circuitry (Q1507 and
surrounding circuitry) or IC151 is defective.
NO
NO
NO
YES
(*1) Abnormal sample of HDMI connector : The internal terminal has bent.