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TROUBLESHOOTING FLOW CHARTS
NO POWER
(LED doesn't light)
Is the input voltage
applied to power supply
CN61 (1), (3) PINS
YES
Is the input voltage applied
to CN63 (1), (3) PINS and
CNPPS (1),(7),(9), (15) pins of
power supply unit?
YES
MAIN DIGITAL PWB
PICTURE IS DISPLAYED,
BUT NO SOUND, LOW
SOUND OR SOUND
Check speaker terminal and
speaker connector
locked
Are the voltages applied to
CN63, CNPPS (7) pin ?
YES
MAIN DIGITAL PWB
NO
unit?
120
AC inlet
VAC
NO
[CN63] 1. +5 V
3. +3.3.V
[CNPPS] 1. +5.6V
7. +16 V
9. +10 V
15. + 12V
DISTORTED
unlocked
Check
No sound
NO
[CN63] 1. +5 V
3. +3.3.V
[CNPPS] 1. +5.6V
7. +16 V
9. +10 V
15. + 12V
Power Switch
POWER SUPPLY
UNIT
POWER SUPPLY
52
DW2U
AC Fuse
F9A2
Filter PWB
6.3A/120V
UNIT
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