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Marantz CD6003 - Advanced USB;iPod Playback Features; File Skipping and Favorite Part Search; Repeat, Random, and AMS Playback

Marantz CD6003
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21
8.4 Always No Audio
If no problem is found with the communications between
each Module and IC75 on CUP12192x-2, the problem
lies with IC75 or the following analog circuit. If the output
of AOUTA+/- and AOUTB+/- of IC75 has not gone out,
IC75 may be broken. If such is the case, replace IC75.
Refer to each circuit.
8.5 USB device is not recognized
If the USB indication will not change after a USB device is
connected, the unit has not recognized the USB device.
If it still will not change after another USB device is tried,
check if TPF691 is receiving a voltage of +5V.
Many devices are supplied with power through the USB
port.
The USB indication means that the microprocessor is
communicating with the USB module properly.
If the voltage cannot be detected, check 1pin of JK51,
VDD of board and IC26. If the voltage is detected and
yet going low on 2pin/3pin of JK51 after a USB device
is connected, the USB module determines that no
connection is made. If this is happening, the problem can
lie with the USB device that has been connected thereto
or with the USB connector.
If a wave is detected from TPF671 and TPF673 after a
USB device is connected, IC11 may be broken. If such
is the case, replace IC11.
8.6 The unit will not come out of STANDBY
If the unit will not come out of STANDBY after the POWER
ON/STANDBY button is pressed while the STANDBY
LED is ickering, check 59pin of IC21 on CUP12190x.
If this test pin has turned High, IC21 is functioning
properly. Check CUP12192x-1.
If this test pin will not change from Low, IC21 may be
broken. If such is the case, replace IC21.
8.4
CUP12192x-2IC75通信各電源
正常供給場合、IC75回路故障
可能性
IC75AOUTA+/- AOUTB+/-
IC75IC75
場合回路回路
場合各回路参照
8.5 USB認識
USBUSB
場合、USB認識
USB
JK511pin+5V電圧確認
USBUSB
又、USB表示場合、USB
通信正常
合、JK511pin
VDDIC26確認
合、USB
JK51 2pin/3pinLow合、USB
接続認識
合、USB USB
(JK51)
USBJK51 2pin/3pin
場合、IC11可能性
IC11交換
8.6 復帰
LED Power On/
Standby Key 合、
CUP12190xIC2159pin確認
High変化場合、IC21正常
動作
CUP12192x-1確認
LowIC21
可能性
IC21交換
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