Denon RCD-M38 Service Manual page 40

Check Digital Audio Data and Clock for DAC.
INPUT B'D
• [IC15] : 2,3,4pin
BIK,STI,LRK
Check Analog Audio Data output from DAC.
INPUT B'D
• [IC15] : 9,10,11,12pin on INPUT B'D
• [IC17] output 1,7pin
Check Analog Audio Data input for FUNCTION IC.
INPUT B'D
• [IC11] input 23,24pin
F_CD_USB_L,FCD_USB_R
z
Check control signal for FUNCTION IC.
INPUT B'D
• [IC11] : 29,30,31pin
D_DATA,C_CLK,V_CE
Check Analog Audio Data output from FUNCTION & PRE AMP.
• [IC11] : 49, 50pin Lout,Rout
• [IC12] : 1,7 pin
Check audio function mute signal.
INPUT B'D
• [Q112(B)] : "L" level O.K.?
Check Analog Audio Data input for POWER AMP.
AMP B'D
• [IC71] : 1,18pin
Check SPEAKER RELAY control signal.
SPEAKER B'D
• [D706] : ANODE -12V O.K.?
Check Analog Audio Data output for POWER AMP to SPEAKER.
AMP B'D
• [IC71] : 10,13pin
SPEAKER B'D
• [JK71]
OK
OK
OK
OK
OK
OK
OK
OK
END
Check Soldering.
NG • [IC16] on MCU_CD B'D
• [WN12] : 2,3,4pin on MCU_CD B'D
BICK,SDTI,LRCK
• [WF12] on INPUT B'D
NG Check Soldering.
• [IC15] : 9,10,11,12pin on INPUT B'D
• [IC17] on INPUT B'D.
NG
Check Soldering.
• [IC11] on INPUT B'D
Check Soldering.
NG • [IC11] on MCU_CD B'D
• [WF11] : 6,7,8pin on INPUT B'D
V_DATA,V_CLK_VCE
• [WN11] on MCU_CD B'D
Check Soldering.
NG
• [IC11] on INPUT B'D
• [IC12] on INPUT B'D
Check Soldering.
NG
• [Q106],[112] on INPUT B'D
• [WF11] : 10pin F_MU on INPUT B'D
• [IC11],[Q103] on MCU_CD B'D
• [WN11] on MCU_CD B'D
Check Soldering.
NG
• [CN72] : 6,8pin on INPUT B'D
VOL_L,VOL_R
• BN72 on AMP B'D
Check Soldering.
• [BN97] : 10pin on SPEAKER B'D
NG
• [CN97] on AMP B'D
• [Q709],[Q710] OK? on AMP B'D
• [BN71] : 3pin SP_ON on AMPB'D
• [CN71],[IC11] on MCU_CD B'D
Check Soldering.
NG
• [IC71] : 10,13pin
• [CN97] : 1,2,3,4pin on AMP B'D
Lch,RCH
• [BN97] on SPEAKER B'D
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