Denon D-T1 Service Manual page 41

5. The disk is not loaded, or is not played.
Check the operation of the " 1 / 3 " button.
MAIN PCB (ADC_KEY2)
[XP10 : 7pin]
The voltage changes to around 0V when the
" 1 / 3 " button is pressed.
YES
Check the Pickup.
MAIN PCB
[XP5 : 17pin]
No abnormalities in the PUHRF output
YES
Check the following parts and surrounding
circuits
MAIN PCB
[U5, U6, U10]
No abnormalities in the circuits
YES
Check the wires, etc.
MAIN PCB
[Between XP5 and mecha]
[Between XP4/XP6 and mecha]
No abnormalities in wires or connections
YES
Replace the mechanical.
NO
Check the state / soldering for the following
parts.
DISPLAY PCB
[SW2, ESD2, XP4]
MAIN PCB
[XP10, FB35, R131]
Check the surrounding circuits.
NO
Replace the mechanical.
NO
Repair the abnormal area.
NO
Repair the abnormal area.
6. No audio output.
6.1. No sound is output from any inputs
No sound is output from the DIGITAL IN, ANA-
LOG IN, TUNER and BLUETOOTH inputs
YES
Check I2S between [U5 (SPHE8104)] and [U19
(STA339BW)]
MAIN PCB
[R250,R365,R366,R367]
I2S is input as normal to [U19]
YES
Check the following parts and surrounding
circuits
MAIN PCB
[U19]
6.2. No sound is output from DIGITAL IN
No sound is output from DIGITAL IN
YES
Check the following parts and surrounding
circuits
MAIN PCB
[U9]
41
NO
Go to "6.2. No sound is output from DIGITAL
NO
Check the following parts and surrounding
circuits
MAIN PCB
[U5]
NO
Go to "6.3. No sound is output from inputs
except DIGITAL IN"
IN"