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KVT-627DVD/627DVDY/717DVD
KVT-737DVD/747DVD/767DVD
Ref. No.
Application / Function
Operation / Condition / Compatibility
Q4
For fan 11V power supply
For controlling output voltage
Q6
ANT-CONT SW
Comes on when TUNER source is selected
Q7
P-CONT SW
Goes OFF when STANDBY source is selected
Q8~11
For P-CONT circuit control
Controlling P-CONT circuit
Q12
BU detection SW
Comes ON power supply voltage is about 8.8V or more
Q13
For EXT-AMP control
Control of external amplifier
Q14
For surge voltage detection
Comes ON when Q15 is ON
Q15
For surge voltage detection
Comes ON when power supply voltage is about 20V or more
Q50
For
±
9V power supply
Comes ON when Q51 is ON
Q51
For
±
9V power supply
Comes ON when SW14V is ON
Q52
SW14V power supply SW
Comes on at P-ON
Q54
For BU5V power supply
-
Q55
A8V power supply SW
Comes ON when SW14V is ON
Q58
For BU5V power supply
-
Q59
For A8V power supply
BU14V
→
8V for audio is supplied
Q61
V5V power supply SW
Comes ON when SW14V is ON
Q62
SW5V power supply SW
Comes ON at P-ON
Q63
For SW5V power supply
BU5V
→
SW 5V is supplied
Q64
For V5V power supply
BU14V
→
5V for video is supplied
Q65~70
For
±
9V power supply
Q150
SVR6.8V, Audio 3.3V,
Comes ON when SW14V is ON
IC150 power supply SW
Q151
For SVR voltage reduction control
Electric current control of SVR voltage reduction circuit
Q152
SVR6.8V, Audio 3.3V, IC150 power supply
Power supply to IC150, voltage supply to Q151
Q200
For audio muting
Audio muting of pre-out front right channel
Q201
For audio muting
Audio muting of pre-out front left channel
Audio muting of pre-out rear left channel
Muting at momentary power down, resetting, and audio mute timing
Audio muting of pre-out rear right channel
Audio muting of pre-out center channel
Audio muting of pre-out sub-woofer channel
Audio muting of AVOUT right channel
Muting at momentary power down, resetting, and audio mute timing
Audio muting of AVOUT left channel
Q250
AM power supply SW
Comes ON when AM source is selected
Q252
For AM power supply
Audio 8V is supplied when AM source is selected
Q403,404
Audio selector control SW
Converts IC413
µ
-com controlled terminal voltage: 5V
→
8V
Q405,406
Audio selector control SW
Converts IC414
µ
-com controlled terminal voltage: 5V
→
8V
Q500
For reversing resetting signal voltage
Reverses signal in order to obtain resetting signal for TV tuner
COMPONENTS DESCRIPTION
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