Kenwood SVT-M700 Service Manual page 3

Ref.No. Component Name
Q11 2SA1428
Voltage limiter
Q12 2SC2412K
Q201 2SC4081
Q202 2SA1576A Video buffer
Q203 2SC4081
Q301 DTC144EUA Reset SW
Q302 DTA124EUA Panel reset SW
Q309 2SC4081 VOL DOWN detection SW
Q310 DTC124EUA Buzzer SW
Q311 DTC124EUA Dimmer detection SW
Q312 2SA1576A
LED SW
Q313 DTC124EUA
VIDEO UNIT(X35-4272-70)
Ref.No. Component Name
IC200 LZ9GJ24 Timing controller IC
IC201 NJM2107F Op. amplifier
IC202 TC74AC74FT D flip-flop
IC301 NJM4580V Op. amplifier
IC400 NJW1303V Synchronising pulse separation IC HD signal and VD signal pulse separation and the burst gate pulse generation
IC401 TC7W00FU NAND
IC402 TC7W34FU Buffer
IC403 TC7W34FU Buffer
IC500 MB90096-234 OSD control IC
IC501 TC74HC07AFE OSD signal buffer
IC700 BR24C01AF-W EEPROM
IC701 AN2546FH-A Video signal processor IC
IC703 NJU7200U30 3.0V AVR
Q10 DTC143ZUA Touch panel Y0 SW
Q11 DTC143ZUA Touch panel X0 SW
Q12 DTC143ZUA
Touch panel Y1 SW
Q13 DTA143ZUA
Q14 DTA143ZUA Touch panel X1 SW
Q200 2SC2411K VCO
Q300 2SC4081 Ripple filter
Q301 2SC4081 7.5V AVR
Q302 2SA1577
COM buffer
Q303 2SC4097
Q401 2SC4081
C.SYNC buffer
Q403 2SA1576A
Q500 2SC4081 I buffer
Q600 DTC124EUA
Q601 DTA143XUA Inverter SW
Q602 2SC2873
Q603 2SD1803
Inverter driver
Q604 2SD1803
Q700 2SC4081 Y buffer
COMPONENTS DESCRIPTION
Application/Function
Power supply voltage limiter and Ripple filter
Video signal amplifier and buffer
When the panel reset SW is pressed, Q301 is turned on, and the system MI-
COM. is reset.
When the panel reset SW is pressed, Q302 is turned on, and the reset signal
is output to STC-700.
When VOL DOWN SW is pressed, Q309 is turned off.
When Dimmer control signal from the vehcle is applied, Q311 is turned on.
When LED brightness control signal (PWM) from the vehcle is applied, Q312
and Q313 are turned on.
Application/Function
LCD module control
LPF for PLL control (VT voltage control)
The delay of the vertical start position of the screen
COM amplifier and buffer driver
NAND of HD signal and VD signal, the burst gate pulse polarity inverted
Buffer of HD signal, the burst gate pulse and HD+VD
Buffer of HD signal and VD signal
On screen display controller
Buffer of R signal, G signal, B signal, I signal and the inverted burst gate pulse
signal
The memory of the touch panel adjustment data and the chroma data
The video signal processing of LCD drive, the chroma decoder and
γ compensator
For the video signal processor IC
When Y axis input mode is selected, Q10 is turned on.
When X axis input mode is selected, Q10 is turned off.
When X axis input mode is selected, Q11 is turned on.
When Y axis input mode is selected, Q11 is turned off.
When Y axis input mode is selected, Q12 and Q13 are turned on, and SW5V
power line is applied to the touch panel assembly.
When the panel touch is detected or the X axis input mode is selected, Q14 is
turned on, and SW5V power line is applied to the touch panel assembly.
For PLL oscillation
For the video signal processor IC and V COM amplifier circuit
+7.5V AVR for the video signal processor IC
V COM signal driver
Video signal or the navigation C.SYNC signal buffer
OSD half brightness control
When Q600's base goes Hi, Q601 and Q602 are turned on, and the inver ter
circuit is working.
For the back light inverter trans driver
Brightness signal buffer
SVT-M700
Operation/Condition/Compatibility
Operation/Condition/Compatibility
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