Kenwood KVT-M707Y Service Manual page 6

KVT-M707/M707Y
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3 7 63 1515 0
Ref. No. Application / Function
Q8~11 P-CONT CONTROL
Q12 BU DET SW
Q13 EXT-AMP CONTROL
Q14 SURGE VOLTAGE DET
Q15 SURGE VOLTAGE DET
±9V POWER SUPPLY
Q50
±9V POWER SUPPLY
Q51
Q52 14V POWER SUPPLY SW
Q54 BU5V POWER SUPPLY
Q55 A8V POWER SUPPLY SW
Q58 BU5V POWER SUPPLY
Q59 A8V POWER SUPPLY
Q61 V5V POWER SUPPLY SW
Q62 SW5V POWER SUPPLY SW
Q63 SW5V POWER SUPPLY
Q64 V5V POWER SUPPLY
±9V POWER SUPPLY
Q65~70
TE
SVR6.8V / AUD3.3V
L 13942296513
Q150
IC150 POWER SUPPLY SW
Q151 SVR VOLTAGE-DECREASED CONTROL
SVR6.8V / AUD3.3V
Q152
IC150 POWER SUPPLY SW
Q200 AUDIO MUTE
Q201 AUDIO MUTE
Q202 AUDIO MUTE
Q203 AUDIO MUTE
Q204 AUDIO MUTE
Q205 AUDIO MUTE
Q206 AUDIO MUTE
Q207 AUDIO MUTE
Q208 AUDIO MUTE
Q209 AUDIO MUTE
Q250 AM POWER SUPPLY SW
Q252 AM POWER SUPPLY
Q403,404 AUDIO SELECTOR COLTROL SW
Q405,406 AUDIO SELECTOR COLTROL SW
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Q500 RESET SIGNAL VOLTAGE INVERTER
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6
COMPONENTS DESCRIPTION
P-CONT circuit control
Comes ON when power supply voltage is about 8.8V or higher
External amp control
Comes ON when Q15 is ON
Comes ON when power supply voltage is about 20V or higher
Comes ON when Q51 is ON
Comes ON when SW14V is ON
Comes on at P-ON
Comes ON when SW14V is ON
BU14V → 8V for audio is supplied
Comes ON when SW14V is ON
Comes on at P-ON
BU5V → SW5 is supplied
BU14V → 5V for video is supplied
Comes ON when SW14V is ON
Electric current control of SVR voltage reduction circuit
Power supply to IC150, Voltage supply to Q151
Audio muting of pre-out front right channel
Audio muting of pre-out front left channel
Audio muting of pre-out rear left channel
MUTE at momentary power down, reset, 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 AV OUT right channel
MUTE at momentary power down, reset, and audio MUTE timing
Audio muting of AV OUT left channel
Comes ON at AM source selection
Audio 8V is supplied at AM source selection
5V → 8V conversion of IC413 µ-com control terminal voltage
5V → 8V conversion of IC414 µ-com control terminal voltage
Signal is reversed to obtain resetting signal to TV tuner.
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8
Operation / Condition / Compatibility
Q Q
3 6 7 1 3 1 5
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9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
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