Marantz AV7005/N1B, Service Manual

Page: 49 / 199

49
YES
YES
YES
YES
YES
YES
YES
Check operation of each device.
(AMP source : VCR [i/p:OFF, MONITOR OUT: MONITOR1] / Video
input of player : 480P / Connect the TV.)
Check operation of U1002 (ADV3002).
Check operation of U1100 (ADV7840).
(23) Check power supply.
Are 5V or 3.3V supplied to U1002 (each power supply pin)?
(27) Check Xtal oscillator.
Is oscillation of X1101/X1103(28.6363MHz) transmitted?
(24) Check RESET.
Is RESET waveform con fi rmed in U1002 (36pin), when power is
turned on? (If continued to "H" or " L", proceed to "NO".)
(28) Check RESET.
Is RESET waveform con fi rmed in U5500 (53pin), when power is
turned on? (If continued to "H" or " L", proceed to "NO".)
(25) Check output signal.
Is TMDS waveform con fi rmed in 25pin/26pin/28pin/29pin/31pin/32
pin/34pin/35pin.
Is waveform con
fi rmed in 67pin/68pin to DDC_SCL/DDC_SDA.
(If not continued to " L", proceed to "YES".)
(29) Check output signal.
Is waveform con fi rmed in R1148(HRDE/HRVSYNC/HRHSYNC/
HRPCK). (If not continued to " L", proceed to "YES".)
(26) Check power supply.
Is 1.8V supplied to C1118/C1154/C1125/L1102?
Is 3.3V supplied to C11181/C1208/C1201?
The power supply circuitry is defective.
The X1101/X1103 or U1100 is defective.
The RESET circuitry (Q1009 and
surrounding circuitry) or U1002 is defective.
The RESET circuitry or U1100 is defective.
The U1002 is defective.
The U1100 is defective.
The power supply circuitry is defective.
NO
NO
NO
NO
NO
NO
NO