Denon AVR-1712, Руководство по обслуживанию

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YES
YES
YES
YES
YES
YES
YES
Check operation of each device.
(AMP source : BD / Video input of player : 480P / Connect the TV.)
Check operation of U1(ADV3002).
Check operation of IC9(ADV7623)
(20) Check power supply.
Are 5V or 3.3V supplied to U1 (each power supply pin)?
Refer to [Detail C] of the substrate for test point.
(21) Check RESET.
Is RESET waveform confirmed in U1 (97pin), when the power
is turned on?(If the waveform is not the reference waveform,
proceed to NO.)
(25) Check xtal oscillator.
Is oscillation of XTAL1(28.6363MHz) transmitted?
(23) Check output signal.
Is TMDS waveform confirmed in 25pin/26pin/28pin/29pin/31pin/3
2pin/34pin/35pin.
Is communication waveform of DDC_SCL/DDC_SDA confirmed
in 67pin/68pin? (If the waveform is not the reference waveform,
proceed to NO.)
(22) Check Control signal (I2C).
Is waveform confirmed in TP[HSCL/HSDA], when the power
is turned on? (If the waveform is not the reference waveform,
proceed to NO.)
(26) Check RESET.
Is RESET waveform confirmed in IC9 (97pin), when the power is
turned on? (If not reference waveform, proceed to "NO".)
The pattern and circuit from the HDMI connector (JACK6) to the
IC(IC9) is defective, or HDMI output circuitry is defective (IC9 and
surrounding circuitry).
(24) Check power supply.
Are 1.8V or 3.3V supplied to IC9(each power supply pin)?
Refer to [Detail D] of the substrate for test point.
The power supply circuitry is defective.
The power supply circuitry is defective.
The RESET circuitry (Q1009 and
surrounding circuitry) or U1002 is defective.
The XTAL1 or IC9 is defective.
The U1 is defective.
The pattern is defective of the HSCL/HSDA
line.
The RESET circuitry or IC9 is defective.
NO
NO
NO
NO
NO
NO
NO