5. Cannot Play CDs
Electricity first passes through the CD DSP, motor driver IC and CD mechanism when the function is turned to CD.
This section details items to check if the audio signal is being correctly input.
Turn power and communication of all other functions off.
Check the input signal.
Is the digital audio signal being input normally?
AUDIO PCB [
U1019: 25, 26, 27pin
] (PCM DATA, PCM LRCK, PCM BCK)
If there is a malfunction, proceed to "
NO
".
Check the output signal.
Is the digital audio signal being output normally?
DIGITAL PCB [
U3501 : 34, 35, 36pin
](PCM DATA, PCM BCK, PCM LRCK)
If there is a malfunction, proceed to "
NO
".
Is the Master Clock being input when the power is on and the
function is turned to CD?
DIGITAL PCB : [
U3501 : 48pin
] 16.9344MHz
Check if the connection is as indicated in the wiring diagram and
adjust the FFC wiring if necessary.
If this does not re-establish contact in the wiring, replace the FFC or
the circuit board which the connectors are mounted on.
Check each part listed after "YES" in "
Checking the Digital communication waveform. DIGITAL PCB
Is there an abnormality in the "
Hi
" (3.3V) or "
Lo
" (0V) level?
Communication waveform confirmation point of [
U3001
] and
[
U1004
]
[
R3099
]C_PLD_CLK, [
R3102
]C_PLD1_CS, [
R3101
]C_PLD_MDI
If there are no abnormalities, replace the Digital PCB.
Check each part in "
4. Audio PCB Abnormalities and no Audio Output (Line Out, Variable Out, H/P Out)
".
Checking the Digital communication waveform. DIGITAL PCB
Is there an abnormality in the "
Hi
" (3.3V) or "
Lo
" (0V) level?
Communication waveform confirmation point of [
U3001
] and [
U1004
]
[
R3099
]C_PLD_CLK, [
R3102
]C_PLD1_CS, [
R3101
]C_PLD_MDI
If there are no abnormalities, replace the Digital PCB.
Check the connection.
Has a contact failure occurred or is a connector missing?
DIGITAL PCB [
N3002 : 12pin
] 22MHz
AUDIO PCB [
N1001 : 12pin
] 22MHz
Check the power supply voltage. DIGITAL PCB
Is 3.3V supplied?
[
U3003 : 1pin
]
Checking the CLOCK. DIGITAL PCB
[
U3003 : 5pin
] 22.5792MHz,
[
U3003 : 7pin
] 24.576MHz
Check each part listed after "
1.4. I2C Communication Line Abnormalities
There may be an abnormality in the I2C signal sent between the System uCOM [
U1004
] and CS2000 [
U3003
].
NO
NO
YES
NO
YES
YES
YES
YES
NO
YES
NO
NO
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
54
