SAMSUNG SP-42W4HPR Service Manual Troubleshooting

Troubleshooting
Samsung Electronics 5-1
5. Troubleshooting
5-1 Convergence Misaligned
(BV, BH, RV, RH, GV, GH)
Normal
Check FD101S,FD102S
on the sub board
Normal
Check the input/output
of ICZ103,ICZ104
on the sub board
Normal
Abnormal
Abnormal
Check the input
voltage of main
CN801 and sub CN801
Check connectors
CNZ01
Replace FD101S,FD102S
and check associate circuits
Abnormal
Check the output from
CG-MDL and FD855S,
FD802S on the SUB PCB
Normal
Check the output from
ICZ03, ICZ04
on the sub board
Normal
Check DY
Abnormal
Check the circuits
related to ICZ103,ICZ104
Abnormal
Check the circuits related to
CNZ02,CNZ04,CNZ05
5-2 No Sound
Troubleshooting
5-2 Samsung Electronics
Abnormal
Check the input/output
circuits of IC601
Normal
Check IC603
Normal
Check IC602
Abnormal
Abnormal
Check the output
volume level of
MAIN CN601
Check the circuits
related to IC601
Check the circuits
related to IC601
Normal
Check Speaker
Normal
Check IC605
Normal
Check various input circuits
Abnormal
Abnormal
Check the circuits
related to IC602
Check the circuits
related to IC605
Troubleshooting
Samsung Electronics 5-3
5-3 No Raster
Abnormal
Check the input voltage
of POWER CORD
Normal
Check the Standby
voltage of IC841
Normal
Check MICOM VCC
Normal
Check the operating status
of MICOM POWER PORT
Normal
Abnormal
Abnormal
Abnormal
Abnormal
Check the operating
status of remote control
and POWER S/W
Check the input voltage
Check ICS801,PC811S
Check the circuits related to
MICOM VCC input
Normal
Check the remote
control and
CONTROL ASSY
Normal
Check the input
voltage/waveform of
CRT-PCB CN501,CN401
Normal
Check the input/output
circuits of IC501,
Abnormal
Abnormal
IC531,IC561
Check the circuits
inside SCAN MDL
Check Connector wire
Check QS802
Normal
Check IC831S,PC801S
Normal
Check the voltage/waveform
of CN801,CN802,CN502A
Normal
Check the input
of SCAN MDL
Normal
Check the output from
SCAN MDL CN03
Abnormal
Abnormal
Abnormal
Abnormal
Check the circuits related
to IR / MICOM
Check the circuits related
to QS802
Check the circuits related
to IC831S,PC801S
Check the circuits related to
CN801,CN802,CN502A
Check the circuits related to
SCAN MDL input
Normal
Check the voltage
of CRT,SCREEN
Abnormal
Check the circuits
related to
the input/output
of IC501,IC531,IC561
MEMO
5-4 Samsung Electronics
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