Denon DBP-2012UDCI, Service Manual

Page: 33 / 92

33
Check power supply.
・
Check the power supply (1.0V_ABT, 1.8V_ABT,
+3.3V_V) of U22.
・ Check the power supply (+3.3V_DDST) of U225.
・ Check the power supply (+1.8V_VIDEO, +3.3V_V)
of U228.
・
Check the power supply (+5V_AV) of U20.
・ Check soldering (U7, U13, U17, U702 and
surrounding circuitry).
Check output signal of [U100].
・
Is the signal of VOUTCLK1, VOUTVSYNC and
VOUTHSYNC output?
・ Is the signal output to VOUT19-12 and VOUT9-2?
Check output signal of [U22].
・ Is the signal of ABT2015_OUT_VCLK0_R/VSN_R/
HSN_R/DE_R output?
・
Is the signal output to ABT2015_Y11_R-Y0_R,
ABT2015_CB11_R-CB0_R, and ABT2015_CR11_
R-CR0_R?
・ Is the sine wave of 27MHz output to X6?
・ Are +3.3V supplied to RST_2015_N?
Check output signal of [U225].
・
Is the signal of DOCMP_CLK_T6/VS_T10/HS_R10/
DE_R9 output?
・ Is the signal output to DOCMP_Y7_R12-Y0_N16,
DOCMP_Cb7_T4-Cb0_T12 and DOCMP_Cr7_
M15-Cr0_J16?
・
Are +3.3V supplied to DDST_RSTn_M9?
Check output signal of [U228].
・
Is the signal output from 44pin, 43pin, and 42pin?
Check output signal of [U20].
・
Is the signal output from 23pin, 21pin, and 18pin?
・
Are +3.3V supplied to 15pin
Check the voltage of the output terminal.
・
Is data output from the COMPONENT VIDEO OUT
terminal of J861?
・
Check soldering (U100 and each signal line and
surrounding circuitry).
・ Check soldering (U22 and each signal line and
surrounding circuitry).
・
Check soldering (X6 and surrounding circuitry).
・ Check soldering (U225 and each signal line and
surrounding circuitry).
・
Check soldering (U228 and each signal line and
surrounding circuitry).
・ Check soldering (U20 and each signal line and
surrounding circuitry).
・
Check soldering (U861 and surrounding circuitry).
END
3.2. Component out doesn't output.
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES