Denon DRA-F107 Service Manual page 12

Check Analog Audio Data output for POWER AMP
to SPEAKER.
D.POWER AMP BLOCK
[IC54]:39,40pin OUT_A , 36pin OUT_B
31pin OUT_C , 27,28pin OUT_D
MAIN B'D SP OUT BLOCK
JK51
END
(2) AM/FM TUNER-in
Check Power Supply Voltages for AM/FM TUNER.
MAIN B'D
Check Control Signal for AM/FM TUNER.
MAIN B'D
[WN21]: 7pin PLL_CE,8pin R/F_DATA
9pin RF_CLK,10pinPLL_DI OK?
Check Analog Audio Data output from TUNER PACK
MAIN B'D
TUNER PACK output
[WN 21]:1,3pin TU_L, TU_R
[IC21]:68,69pin TU_L,TU_R
to CD/USB in
(3) Portable-in(Front-in)
Check Analog Audio Data output from Prtable-in
FRONT B'D
Portable-in output
BN82 1,3pin POR_L.POR_R
Check Analog Audio Data input for FUNCTION IC
MAIN B'D MCU,Function Bloc
[IC21] input 2,3pin
POR_L.POR_R
to CD/USB in
O.K.
O.K.
O.K.
O.K.
Mark
O.K.
O.K.
Mark
DRA-F107 / DRA-F107DAB
Check Soldering.
WP52 on D.AMP BLOCK
N.G IC54 on D.AMP BLOCK
WC52 on MAIN B'D
Check Soldering.
N.G D931 on SMPS B'D
Q813, 611 on MAIN B'D
IC62 :59pin TU_PWR
Check Soldering.
N.G MAIN B'D
IC61,62,WN21
Check Soldering.
N.G WN21 1,3 pin TU_L,TU_R on MAIN B'D
N.G Check Soldering.
JK82,on FRONT B'D
BN82 on FRONT B'D
Check Soldering.
N.G [CN82]:1,3pin PORT_L<PORT_R on MAIN B'D
[WP11]:10,12pin on MAIN B'D
[WC11]:10,12pin on MAIN B'D
[IC21]:2,3pin PORT_L,PORT_R
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