Denon CEOL RCD-N10, Руководство по обслуживанию

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Is there any abnormality below?
DAMP PCB [Analog audio signal]
WF70 : L+/L-
WF71 : R+/R-
Is there any abnormality below?
MAIN PCB [Analog audio signal]
JK20 :1pin, 2pin
JK21 : 1pin, 2pin
Check for abnormalities in the parts around [
L708
,
L709 ], etc. and repair them.
Replace the [
JK20, JK21
].
4. No sound is output from the speakers or headphones, or noise
occurs
Is there any abnormality below?
MAIN PCB [DIR1]
IC37 : 22pin,36pin, 42pin(+3.3VD), 46pin(+5VD)
MAIN PCB DIR1
Is [ IC37 : 34pin(RST) ] "Hi"?
Is there any abnormality below?
MAIN PCB [DIR1 digital audio signal (I2S)]
IC37 : 17pin(DIR1M_SDATAO)
18pin(DIR1M_LRCKO)
19pin(DIR1M_SCLKO)
20pin(DIR1M_MLCKO)
Is there any abnormality below?
MAIN PCB PWM Modulator TAS 5558
IC40 : 9pin, 14pin, 35pin, 35pin,
50pin(+3.3V_5558) ]
Is there any abnormality below?
MAIN PCB PWM Modulator TAS 5558
[ Digital audio signal (I2S) ]
IC40 : 11pin(MCLK), 22pin(LRCK), 23pin(SCLK),
19pin(SDIN1)
MAIN PCB PWM Modulator TAS 5558
Is [
IC40 : 16pin(RESET)
] "
Hi
"?
[ IC24 : +3.3VD ], [ Q222 : +5VD ] or SMPS power
supply circuit may be malfunctioning.
Repair the part where the abnormality is occur-
ring or check each part according to the area from
" YES " in the flow chart for " 1.3. Power Supply Volt-
age Abnormalities ".
The DIR1 [ IC37 ], MCU [ IC20 ] or the circuit around
the MCU may be malfunctioning.
Check for abnormalities and repair them.
There may be issues in the circuit around [ IC37 ] or
in the operation of the operation check function.
If there is an abnormality in the operation check
function, check the functions in items 6-9.
The PWM modulator [ IC40 ], +3.3V_5558MCU
[ IC20 ] or the circuit around the MCU may be mal-
functioning.
Check for abnormalities and repair them.
The PWM modulator [ IC40 ], MCU [ IC20 ] or the
circuit around the MCU may be malfunctioning.
Check for abnormalities and repair them.
NO
NO
NO
NO
YES
YES
YES
YES
Check for abnormalities in the signal path be-
tween MAIN PCB DIR1[ IC37 ] and MAIN PCB PWM
modulator TAS5558[ IC40 ], and repair them.
NO
Speaker → " 4.1. No sound is output from the
speakers, or noise occurs "
Headphone → " 4.2. No sound is output from the
headphones, or noise occurs "
YES
NG
NO
4.1. No sound is output from the speakers, or noise occurs
Is there any abnormality below?
MAIN PCB PWM Modulator TAS 5558
[PWM signal]
IC40 : 38pin(PWM_M_1), 39pin(PWM_P_1),
40pin(PWM_M_2), 41pin(PWM_P_2)
Is there any abnormality below?
DAMP PCB [DAMP TAS5142]
IC70 : 1pin, 18pin, 19pin, 36pin(+12V_5142),
21pin, 26pin, 29pin, 34pin(AMP_
VCC(+29V))
[
WF72, PF72 : 6pin
] or SMPS power supply circuit
may be malfunctioning.
Repair the part where the abnormality is occur-
ring or check each part according to the area from
"
YES
" in the flow chart for " 1.3. Power Supply Volt-
age Abnormalities ".
The MAIN PCB [ Q221, Q223 ] or SMPS power sup-
ply circuit may be malfunctioning. Check each part
listed after " YES " in " 1.3. Power Supply Voltage
Abnormalities ".
NO
YES
NO
YES
Is there any abnormality below?
DAMP PCB [PWM signal of DAMP TAS 5142]
IC70 : 4pin(PWM_A), 6pin(PWM_B),
14pin(PWM_C), 16pin(PWM_D)
Check for abnormalities in the signal path be-
tween MAIN PCB PWM modulator TAS5558[ IC40 ]
and DAMPTAS5142[ IC70 ], and repair them.
NO
YES
Is there any abnormality below?
DAMP PCB [PWM signal of DAMP TAS 5142]
IC70 : 22pin(OUT_D), 25pin(OUT_C),
30pin(OUT_B), 33pin(OUT_A)
There is an abnormality in the communica-
tion between DAMP PCB DAMPTAS5142[ IC70 ],
TAS5142[ IC70 ]] and TAS5558[ IC40 ], or in the
surrounding circuits.
Check for abnormalities and repair them or
replace DAMP PCB.
NO
YES
NO
YES
YES
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
50