Kenwood KVT-915DVD Service Manual page 8

KVT-915DVD,925DVD,935DVD
KVT-945DVD,965DVD
QQ
3 7 63 1515 0
Ref No. Application / Functions
IC6 Charge-pump
IC10 Microprocessor
IC13 Reset IC
IC14 Inverter
IC15 NAND
IC16 AND
IC21 RDS decoder
IC22 E. volume
IC23 Noise amp
IC31 Isolation amp
IC32 Isolation amp
IC33 Isolation amp
IC34 Isolation amp
IC36 Video driver
IC37 Video driver
IC40 Video switch
IC41 AV switch
IC42 OP amp
IC43 Audio switch
TE
L 13942296513
IC44 Electric volume
IC45 Audio power amp
IC47 OP amp
IC48 Inverter
IC50 Isolation amp
IC51 Isolation amp
IC52 OP amp
IC53 OP amp
IC54 OP amp
IC60 AND
IC61 Isolation amp
IC62 Isolation amp
IC63 Inverter
IC70 Audio power amp
Q1 SW
Q2 AVR
Q3 AVR
Q4 AVR
Q5 SW
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Q6 AVR
Q7 AVR
Q8 SW
.
Q9 AVR
Q10,11 AVR
8
COMPONENTS DESCRIPTION
Charge-pump for Audio±9V
System control for X25 unit
Microprocessor reset to reduced voltage for BU line
For muting logic
For muting logic
For muting logic
RDS signal decoder
Audio control, MPX demodulator
Noise amp for RDS circuit
Isolation amp (for FL, FR gnd line)
Isolation amp (for RL, RR gnd line)
Isolation amp (for center, sub gnd)
Isolation for GND line (for DVD down-mix)
Video 75Ω drive amp (for B, G signal)
Video 75Ω drive amp (for R, Sync signal)
Select for NAVI RGB or Ext. TV/VIDEO RGB
Source input/output selector
For bus management
For bus management and DVD AV OUT
Electric volume control for 5.1ch audio & 2 zone and NAVI audio selector
Audio power IC (4ch speaker output)
1/2 VCC
Muting logic inverter
Isolation amp (For AV IN1)
Isolation amp (For AV IN2)
For preout amp (sub, center line)
For preout amp (RL, RR line)
For preout amp (FL, FR line)
Remote control buffer for NAVI
Isolation amp (For NAVI)
Isolation amp (LX BUS : changer unit)
Reset inverter
Audio power IC (1ch speaker output : center amp)
FAN AVR switch
BU5V (darlington circuit)
For SW5V output
For BU5V output
FAN AVR switch
FAV AVR
x ao u163
y
FAN AVR (darlington circuit)
Illumination detect switch
i
For T8.5V output
PON 14V output
2 9
8
Operation / Condition / Compatibility
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9