Denon DRA-F107 - TROUBLE SHOOTING (continued); 6. No Sound, Noise generated

11
DRA-F107 / DRA-F107DAB
6. No Sound,Noise generated
(1)CD/USB PLAY in
Check Analog Audio Data input for FUNCTION IC
MAIN B'D MCU,Function Bloc䌫 N.G Check Soldering.
䊶 [IC21] input 78,79pin 䊶 [IC21] on MAIN B'D
CD_L,CD_R 䊶 JK21
O.K.
Check Power Supply Voltages for PREAMP & POWER AMP. Check Soldering.
MAIN B'D MCU,Function Block N.G 䊶 [BN61]:1,2pin +12V,-12V,
䊶 [BN61]:1,2,4pin+12V,-12V , SW+5.6V 4pin SW+5.6V on MAIN B'D
䃨 D.POWER AMP B'D 䊶 [CN91]:1,2,3,7pin +27Von D.AMP BLOCK
䊶 [WP51]:5pin +12V 䊶䈀WP51䈁:5pin +12V
䊶 [CN91] : 1,2,3,7pin +27V 䊶 SMPS B'D IC97,IC98,D945,D931
䊶 [IC53]: 3pin +12V 䊶 SMPS B'D IC91,D951
䊶 D.POWER AMP B'D IC53
O.K.
Check Power Supply Voltages for FUNCTION IC Check Soldering.
MAIN B'D MCU,Function Bloc䌫 N.G 䊶 IC22,IC23 on MAIN B'D
䊶 [IC21]:30pin VDD (3.3V) 䊶 IC64 on MAIN B'D
31pin AVCC+7V,67pin AVCC-7V
O.K.
Check Control Signal for FUNCTION IC Check Soldering.
MAIN B'D MCU,Function Bloc䌫 N.G 䊶 IC62 on MAIN B'D
䊶 [IC21]:27,28,29pin
CLK,DATA,LATCH
O.K.
Check Analog Audio Data output from FUNCTION & Check Soldering.
PRE AMP N.G 䊶 IC21 on MAIN B'D
MAIN B'D MCU,Function Bloc䌫䊶IC24 on MAIN B'D
䊶 [IC21]:44, 39pin Lout,Rout
䊶 [IC24]:1,7 pin
O.K.
Check Audio function Mute Signal. Check Soldering.
MAIN B'D MCU,Function Bloc䌫 N.G 䊶 Q603,604, on MAIN B'D
[Q103,104]:"L"level O.K.? (-12V) 䊶 IC62 on MAIN B'D
O.K.
Check Analog Audio Data input for POWER AMP Check Soldering.
D.AMP B'D N.G 䊶 [WC51] 1,3pin on MAIN B'D,
䊶 [IC54]: 6,7pin IN_A,IN_B VOL_L_OUT,VOL_R_OUT
12,13pin IN_C, IN_D 䊶䈀WP51䈁:1,3pin on D.Power B'D
䊶 IC51,IC52 on D.AMP B'D
O.K.
Check SPEAKER RELAY control Signal Check Soldering.
MAIN B'D N.G 䊶 Q570,Q575 on MAIN B'D
䊶 [D573]:ANODE "L"level O.K.? (-12V) 䊶 [IC62] 77pin RL_MUTE on MAIN B'D
O.K.