Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung Audio HW-C500 samsung_hw-c500_c700-e-4-trouble
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Troubleshooting
4.Troubleshooting
4-1 CheckpointsbyErrorMode
OscilloscopeSettingValues
Voltage/DIV 1V/div
TIME/DIV 500ms/div
4-1-1 NoPower
The power does not turn on.
1
Check if the Micom 2
power is normal. No Check if 5.6V, 3.3V is No
Check if +3.3V is measured at the measured at the UIC5 of the
pin 22, 53, 70, and Main PCB.
73 of UIC1.
Refer to wave pattern Yes Refer to wave pattern
image of Fig. 4-1. image of Fig. 4-2.
Yes
3 Check the power circuit of
Check the connector. SMPS PCB
SMPS : CON3 Pin 5 (5.6V) (Check the outputs of FUSE:
MAIN : UCN2 Pin 10 (5.6V) FL1 and ICA1)
Refer to wave pattern
image of Fig. 4-3.
Check Main PCB Check if the output
No No
Power-Sense (5V). voltage of the L3 of the
Check pin 28 of UIC1. SMPS PCB is 5V.
Yes
Check the connector. Check the power circuit of
Yes SMPS : CON3 Pin 5 SMPS PCB
MAIN : UCN2 Pin 10 (Check the outputs of FUSE:
FL1 and ICA1)
A
Samsung Electronics 4-1
Troubleshooting
A
Check if "H(5V)" is
measured at the pin 92 of the No
UIC1 when the Main PCB Replace the Micom (UIC1).
power is turned on.
Yes
Check the pin 5 of CON3 of
Check pin 10 of UCN2 No SMPS PCB and check the
of the Main PCB. voltages of both the ends of L3
(equal to or greater than 5V)
Yes
Check UCN3 of the Front
Cable.
4-2 Samsung Electronics
Troubleshooting
1
AIC1
IC2
VIC2
AIC2 AIC6
ASIC1 AIC5
MICOM, page 7-15
ACN2
AIC4 DIC2
1
AIC9
AIC7
AIC8
PWCN1
CN7 DIC1
DIC6 DIC7
AIC12 AIC11 AIC10
1
ACN1
UCN1
UIC1 IC1
1
IC1502
UIC4
IC3 DSP1
DIC12
UIC5
UIC3
C1
UCN4
UCN2 UCN3 DSCN1
MAIN PCB Top, page 6-17
Samsung Electronics 4-3
Troubleshooting
IC2
VIC2
AIC2 AIC6
AIC5
ACN2
AIC4 DIC2
AIC9
AIC7
AIC8
2
CN7 DIC1
DIC6 DIC7
AIC12 AIC11 A
MICOM, page 7-15
UIC1 IC1
2
IC1
UIC4
IC3 DSP1
DIC12
2
UIC5
UIC3
CN4
UCN2 UCN3 DSCN
MAIN PCB Top, page 6-17
4-4 Samsung Electronics
Troubleshooting
3
AIC1
IC2
VIC2
AIC2 AIC6
ASIC1 AIC5
ACN2 MICOM, page 7-15
AIC4 DIC2
3
AIC9
AIC7
AIC8
CN7 DIC1
DIC6 DIC7
AIC12 AIC11 AIC10
ACN1
UCN1
UIC1 IC1
IC1502
UIC4
IC3 DSP1
DIC12
UIC5
UIC3
3
UCN4
UCN2 UCN3 DSCN1
MAIN PCB Top, page 6-17
Samsung Electronics 4-5
Troubleshooting
4-1-2 NoOutput(for2ChannelAnalogInput)
No output
Check A/D Output.
2
1 Check if CLK is measured
Check if signal is No at the pin 10 of AIC4 of the Main No
measured at pin 24 of AIC4 of the PCB and check if 5V power is
Main PCB. measured at pin 7.
Refer to wave pattern
image of Fig. 4-4.
Yes Yes
3 Of AIC4 of the Main PCB pin
Check the outputs of pin 3, 23 CLK and power check.
and 12 of DIC6 of the Main
Check DIR Output. PCB and check input signal.
Refer to wave pattern
image of Fig. 4-5.
4
Check if signal is No Check if "H(5V)" No
measured at pin 22 of DIC2 of the measured at the pin 3 of DIC2
Main PCB. of the Main PCB.
Refer to wave pattern
Yes image of Fig. 4-6. Yes
5 Replace the DIC2 of the
Check the power at DIC2 of Main PCB.
C
the Main PCB and check if
CLK is measured at pin 5.
Check DSP Input. Refer to wave pattern
image of Fig. 4-7.
6
Check if signal is No Check if signal is No
measured at pin 113 of DSP1 of the measured at pin 12 of DIC7 of the
Main PCB. Main PCB.
Refer to wave pattern
Yes image of Fig. 4-8. Yes
Check DR46 of the Main PCB. Check if signal is measured at
the pin 13 of DIC7 of the Main
PCB and check if "H(5V)" is
measured at pin 1.
B
4-6 Samsung Electronics
Troubleshooting
B
D
Check DSP Output.
7
Check if signal is Check if DATA signal is
No
measured at the pin 120 ~ 122 measured at the pin 13 of
of the DSP1 of the DIC7 of the Main PCB.
Main PCB.
Refer to wave pattern
image of Fig. 4-8.
Yes
Check PWM Output.
8
Check if signal is No Check if DATA signal is
measured at the pin 15~18 of the measured at the pin 48, 49,
PWMIC1 of the Main PCB. 70, and 71 of PWMIC1 of the
Main PCB.
Refer to wave pattern
Yes image of Fig. 4-9.
Check if DATA signal is
Check if Speaker Output signal No measured at the pin 10, 26
is measured at the SP3, SP4
of the AMPIC5, 6 of the Main
of the Main PCB.
PCB.
Samsung Electronics 4-7
Troubleshooting
1
2
INPUT-1, page 7-7
1
VIC2
AIC2 AIC6
ASIC1 AIC5
2
AIC4 1 DIC2 2
AIC8
CN7 DIC1
DIC6 DIC7
AIC12
MAIN PCB Top, page 6-17
ACN1
UCN1
4-8 Samsung Electronics
UIC1 IC1
Troubleshooting
3
IC2
VIC2
AIC2 AIC6 DIR/DSP-1, page 7-9
AIC5
3
ACN2
AIC4 DIC2
AIC9
AIC8
CN7 3
DIC1
DIC6 DIC7
AIC12 AIC11
UCN1
UIC1 IC1
MAIN PCB Top, page 6-17
UIC4
IC3 DSP1
Samsung Electronics DIC12 4-9
5
Troubleshooting
4
AIC1
IC2
DIR/DSP-1, page 7-9
4 VIC2
AIC2 AIC6
AIC5
ACN2
AIC4 4 DIC2
AIC9
AIC7
AIC8
CN7 DIC1
DIC6 DIC7
AIC12 AIC11 AIC
UCN1
MAIN PCB Top, page 6-17
UIC1 IC1
IC1
UIC4
4-10 IC3 DSP1 Electronics
Samsung
Troubleshooting
5
AIC1
DIR/DSP-1, page 7-9
IC2
5
VIC2
AIC2 AIC6
AIC5
ACN2
AIC4 DIC2
5
AIC9
AIC7
AIC8
CN7 DIC1
DIC6 DIC7
AIC12 AIC11 AIC
UCN1
MAIN PCB Top, page 6-17
UIC1 IC1
IC1
UIC4
Samsung Electronics IC3 DSP1 4-11
Troubleshooting
6
7
AIC1
IC2
VIC2
IC6
AIC5
DIR/DSP-2, page 7-10
ACN2
4 DIC2 6
AIC9
AIC7
AIC8
DIC6 DIC7 DIC1
AIC12 AIC11 AIC10
IC1 IC1
6 7
IC1502
IC3 DSP1
7
DIC12
UIC5
UIC3
UCN2 UCN3 DSCN1
MAIN PCB Top, page 6-17
4-12 Samsung Electronics
Troubleshooting
AIC2 AIC
ASIC1
8
AIC4
PWCN1 8
CN7
ACN1
UCN1
PWM, page 7-11
8
UI
UIC4
8
PWMIC1
8
UCN4
MAIN PCB Top, page 6-17
Samsung Electronics 4-13
Troubleshooting
4-1-3 NoOutput(forDigitalInput)
No output
1
No Check OPTICAL Jack output signal,
Check if signal is measured at
and 5V power and check circuits
pin 12, 13, and 14, 15 of DIC2 of the
around DIC2 of the Main PCB.
Main PCB.
Yes Refer to wave pattern
image of Fig. 4-10.
Check the power of DIC2.
Check if 3.3V is measured at pin 1 and 9
Check if signal is and if 5V is measured at pin 3.
No
measured at pin 22 of DIC2 Check if DATA signal is measured at the
of the Main PCB. pin 27 and 28.
Check if `H' signal is measured at the pin
7 of the RESET PORT.
Yes
C
4-14 Samsung Electronics
Troubleshooting
1
DIR/DSP-1, page 7-9
1
AIC1
IC2
VIC2
AIC2 AIC6
ASIC1 AIC5
1
ACN2
AIC4 DIC2
AIC9
AIC7
AIC8
CN7 DIC1
DIC6 DIC7
AIC12 AIC11 AIC10
ACN1
UCN1
UIC1 IC1
IC1502
UIC4
MAIN PCB Top, page 6-17
IC3 DSP1
DIC12
UIC5
UIC3
Samsung Electronics 4-15
UCN4
UCN2 UCN3 DSCN1
Troubleshooting
4-1-4 NoOutput(for7.1ChannelAnalogInput)
No output
1 2
Check if output signal is No Check if signal is measured No
measured at pin 9 of AIC10, AIC11, at pin 1 and 2 of AIC10, AIC11,
AIC12, and pin 24 of AIC4 of the AIC12 and pin 8, 9 of AIC4 of the
Main PCB. Main PCB.
Refer to wave pattern
image of Fig. 4-11-1
Yes and Fig. 4-11-2. Yes
Check if output signal is Check if input signal is
measured at pin 2 and 7 of measured at pin 3 and 5 of
AIC7, AIC8, AIC9 and pin 3, AIC7, AIC8, AIC9 and pin 1, 12
13 of AIC6 of the Main PCB of AIC6 of the Main PCB.
and check if +12 and -12V are
measured.
Check if DATA signal Check if "H(3.3V)" is measured
No
is measured at the pin 115 ~ 126 at pin 16 of DIC6, DIC7 of the
of DSP1 of the Main PCB.
Main PCB.
Yes
D
4-16 Samsung Electronics
Troubleshooting
-5VA
AC124 AR153
2C4<> M_SR
4.7UF 1.8KOHM
AR159
AR180
AR177
1KOHM
35V
AC127
AR147
AC134
10UF 1NF
AC136
AC158
1KOHM
4
3
2
1
16V 50V 33OHM
1KOHM
AC165 AR183 9C6> 1B11<
AIC7
BA4560F
VEE
IN1+
IN1-
OUT1
10UF ADC_RESET
50V
16V
100PF
100NF
AC159
100KOHM
AR160
OUT2
16V
IN2+
IN2-
100NF
1KOHM
16V
VCC
AK5358AET
DGND
AGND
AC141
AIC10
5
6
7
8
AR154
1 AINR 16
AR148
2 CKS0
15
AC128
AC147
50V
16V
2.2UF
100NF
AINL
AGND +5VA 1.8KOHM 3 CKS2
14
CKS1
4 VCOM
DIF
13
50V
5 PDN
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