Denon RCD-M40

END
Check Analog Audio Data input to the function IC.
INPUT PCB
• [IC53] input 2, 31 pin
DAC_L, DA_R
z
Check the control signal to the function IC.
INPUT PCB
• [IC53] : 10, 11, 12 pin
V_DATA, V_CLK, V_CE
Check Analog Audio Data output of the function IC and PRE-
AMP.
• [IC53] : 8, 25 pin L_OUT, R_OUT
Check signal for audio mute.
INPUT PCB
• [Q505] : "
Hi
" level O.K.?
Check Analog Audio Data input to POWER AMP.
AMP PCB
• [IC71] : 15(Lch), 11(Rch)
Check the speaker relay control signal.
SPEAKER PCB
• [D711] : ANODE -12 V O.K.?
SPEAKER PCB
• [JK71]
Check Analog Audio Data output from POWER AMP to SPEAK-
ER.
AMP PCB
• [IC71] : (6, 7 : Lch) (4, 5 : Rch)
Check Analog Audio Data output from DAC to AMP.
INPUT PCB
• [IC52] : 6, 7 pin on INPUT PCB
Check soldering.
• [IC52] : 6, 7 pin on INPUT PCB
Check soldering.
• [IC53] on INPUT PCB
Check soldering.
• [IC11] on DIGITAL PCB
• [CN62] : 12, 13, 14 pin on DIGITAL PCB
F_V_DATA, F_V_CLK, F_V_CE
• [BN62] : 12, 13, 14 pin on INPUT PCB
F_V_DATA, F_V_CLK, F_V_CE
Check soldering.
• [IC53] on INPUT PCB
Check soldering.
• [Q504, Q505] on INPUT PCB
• [BN72] : 6 pin F_MU on INPUT PCB
• [IC11, Q101] on DIGITAL PCB
• [CN74] : 3 pin on DIGITAL PCB
Check soldering.
• [BN72] : 5, 1 pin on INPUT PCB
VOL_L,VOL_R
• [CN72] : 5, 1 pin on AMP PCB
Check soldering.
• [CN73] : 11 pin on SPEAKER PCB
• [BN73] on AMP PCB
• [Q708, Q709] OK? on AMP PCB
• [BN74] : 1 pin SP_ON on AMP PCB
• [CN74, IC11] on DIGITAL PCB
• [CN73] on SPEAKER PCB
Check soldering.
• [IC71] : 6, 7,4, 5 pin
• [BN73] : (3, 4 : Lch)(1, 2 : Rch)
NG
NG
NG
NG
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
OK
OK
OK
Check DAC Digital Audio and Clock.
INPUT PCB
• [IC52] : 13, 14, 15 pin
BCK, DIN, LRCK
Check soldering.
• [IC21] on DIGITAL PCB
• [IC51] : (DIR) on INPUT PCB
NG
OK
34