Denon RCD-M40 Service Manual page 37

2.4. iPod / USB Playback
Check Power Supply Voltages for USB PCB.
FRONT PCB
• [JK82] : 1 pin USB+5V
DIGITAL PCB
• [IC37] : 2, 3 pin +5V_D
• [CN93] : 6, 7 pin USB_5V
CONNECT PCB
• [BN93] : 6, 7 pin USB_5V
Check the data input from USB circuit board.
FRONT PCB
• [JK82] : 2, 3 pin D+, D-
• [BN76] : 4, 3 pin D-, D+
DIGITAL PCB
• [CN76] : 2, 3 pin D-,D+
• [IC39] : 10 pin "S"(SEL) "L" OK?
Check Power Supply Voltages for DAC PCB.
DIGITAL PCB
• [IC38] : 5 pin +5V_D OK?
• [IC38] : 4 pin 3.3V OK?
Check clock signal for DAC.
DIGITAL PCB
• [IC36] : 12 pin SCK
12.288 MHz OK?
Check control signal for DAC.
DIGITAL PCB
• [IC36] : 17 pin XSMT (Mute) "Hi" OK?
Check DAC digital audio data and clock.
DIGITAL PCB
• [IC36] : 13, 14, 15 pin
BCK, DIN, LRCK
Check Analog Audio Data output from DAC.
DIGITAL PCB
• [IC36] : 6, 7 pin on DIGITAL PCB
• [BN52] : 1, 3 pin USB_L, USB_R
INPUT PCB
• [BN52] : 1, 3 pin USB_L, USB_R
Check Analog Audio Data input from FUNCTION IC.
INPUT PCB
• [IC53] input 1, 32 pin
U_DAC_L, U_DAC_R
To mark the CD playback(z).
OK
OK
OK
OK
OK
OK
OK
OK
Check soldering.
• [BN76] : 1 pin USB+5V on FRONT PCB
NG • [CN76] on DIGITAL PCB
• [BN92] : 6 pin DC_9V on USB_DC_TO_DC PCB
• POWER PCB
Check parts.
• [IC31, IC32] on DIGITAL PCB
• [IC43] on CONNECT PCB
Check soldering.
NG
FRONT PCB
• [BN76] : 4, 3 pin D-, D+ on FRONT PCB
DIGITAL PCB
• [CN76] : 2, 3 pin D-, D+ on DIGITAL PCB
• [IC39, IC11] on DIGITAL PCB
Check soldering.
• [IC38] on DIGITAL PCB
NG
Check parts.
• [IC43] on CONNECT PCB
Check soldering.
• [IC31] on DIGITAL PCB
NG
• [IC36] on DIGITAL PCB
Check soldering.
NG
• [IC11, IC36] on DIGITAL PCB
Check soldering.
NG
• [IC31,IC36] on DIGITAL PCB
Check soldering.
• [IC36] : 6, 7 pin on DIGITAL PCB
NG
• [BN52] on DIGITAL PCB
• [BN52] on INPUT PCB
Check soldering.
NG
• [IC53] on INPUT PCB
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