Kenwood KVT 50 DVDRY Service Manual

Page 1

MONITOR WITH DVD RECEIVER

KVT-50DVDRY/512/522DVD KENWOOD
/522DVDY/532DVD/532DVDM KenW°°dC°rporation

S E RVI C E MAN UAL (352982222'h323? JAPAN

KENWOOD WW. W mmm

5:2, (Lifl smfl am my;

i 6 oltv DIM AJl ufll lw «mg g-~ /fll. mks-Ti

Illustrations is KVT-522DVD

DC cord * DC cord * Cord with plug Remote controller *
(E30-6815-05) (ESQ-681605) (E30-6813-05) (A70-2083-15)
/ gig

REV: 5m / ,

PRK: 2m ///

BU.GND: 1m 5 RC»DV34O
Escutcheon Mounting hardware assy Lever Screw set SIZE AAA BAI'I'ERY *
(807-3159-02) (J21-9716-03) (D10-4589-04) x2 (Mag-1758.15) (NOT SUPPLIED)

xi

gee

OThe IC3, and |C11 in the DVD unit (X37-1100-03) are not replaceable components.
When these |Cs are defective, replace the whole DVD mechanism assembly (X92-6160~00).

You cannot replace only the board.
This product uses Lead Free widen.

OTEST MODE is the same as DDX512.
* Depends on the models. Refer to the parts list. This product complies with the ROHS directive for the European market.

Please refer to the service manual (DDX512: 353-0620-00).

Page 2

KVT-50DVDRY/512/522DVD
/522DVDY/532DVD/532DVDM

CAUTIONS IN ASSEMBLING PANEL DRIVE MECHANISM (A10-5171)

Observe the instructions described in this document when
you are going to replace the parts or components that are
shown in this document.

1. Replacement of motor flat spring

I When mounting the flat spring that shall be in contact
with the worm gear, press the spring toward the direction
shown with an arrow so that there will be no gap be-
tween the tip of the gear and the spring and then mount
the spring. The gear shall be pressure-inserted into the
motor.

I Note that there are two motors. Above operation of
mounting the flat spring is required on both of them.

Mount the flat spring
while pressing it
towards the direction
shown with an arrow
so that there will be no
clearance.

Mount the flat spring
while pressing it
towards the direction
shown with an arrow
so that there will be no
clearance.

DC Motor

Worm

Flat Spring Flat Spring

Page 7

0 VIDEO CONTROL UNIT (X15-110x-xx)

KVT-50DVDRY/512/522DVD
/522DVDY/532DVD/532DVDM

COMPONENTS DESCRIPTION

Ref. No. Application / Function Operation / Condition / Compatibility
[C1 3-terminal regulator 9V~>5V regulator
[C2 3-terminal regulator For AUDIOStSV
[C3 DC/DC converter [C MECHA7.5V/D5V control
[C4 DC/DC converter [C USBSV/D3.3V control
[CB Motor driver Slide
[CG Motor driver Tilt
[C7 3.3V regulator TC3.3V
[CB Buffer for remote controller Remote controller signal waveform shaping
[09 System u-com [C System control
[C10 E2PROM For saving the settings
[C12 Voltage detector u-com reset voltage (3.5V) monitoring
[C13 OR For VMUTE
[0351 POWER [C Power amplifier for speaker output
[C354 VIDEO [SO AMP [Pod Video signal
[0355 RDS decoder [C For RDS signal processing and demodulation
[0356 AND4 KAB IF 3.3V~>5V LEVEL SHIFT
[0357 Electronic volume [C AUDIO -VOL,CTIJSIG,SELECT
[0358 AV SWITCH 7-1nput/3-output AUDIO and 6-input/3-output VIDEO
[C361 VIDEO SELECTOR DVDiBE and NAVLRGB SELECT
[€401,402 INVERTER TV7SDATA OUT BUFFER
[0551 IR remote controller photoreceptor Remote controller signal detection
[0601 VIDEO AMP DVDiBE COMPOSITE SIG LPF/BUFFER
[C602 VIDEO AMP DVDiBE RGB SIG LPF/BUFFER
[0651 AUDIO DAC DVDiBE AUDIO D/A CONVERTER
[C652 OP-AMP2 DVDiBE AUDIO LPF
[C691 INVERTER SPDIF OUT BUFFER
[0692 AND For DVDiBE [C RESET,SIG
[C701 MPEG DECODER DVD/USB MPEG DECODER
[C702 64M FLASH FLASH MEMORY (MP 4Z4) for MPEG DECODER
[€703,704 128M SDRAM SDRAM for MPEG DECODER
[C705 Regulator 3t3Ve1.8V regulator for MPEG DECODER
[0801 USB HOST CONTROLLER 2PORT (External/GARMIN navigation) USB HOST CONTROLLER
[C804 :zidercarsltiirgultIronritSwitch Large current distribution switch for USB
[C805 Regulator 5V~>3.3V regulator for USB
[0806 Regulator SW3.3V%1.8V regulator for USB
[C807 D-TYPE LATCH X 8 Address latch for USB WC
[0851 COPROGESSOR [POD AUTHENTICATION
01 SW REVERSE detection
Q2 SW PARKING detection

Page 12

KVT-50DVDRY/512/522DVD
/522DVDY/532DVD/532DVDM

MICROCOMPUTERS TERMINAL DESCRIPTION

12

Pin No. Pin Name l/O Application Processing Operation Description
34 PREiMUTESW O Pre-out mute (SW) H: OFF, L: ON
35 POWERiPWM 0 Frequency control of DC-DCilC
36 NAVLRX l Communication with navigation system
37 NAVLTX 0 Communication with navigation system
38 TViMciDATA/TViMciDATA 0 Data output to _TV u-com
(For other destination than K and R)
38 TV,MC,DATA/NC O (K,Fl destination)
39 VCCi
4° mmwscm I ETJFSSSLZZTSJSZ;KM
40 TV,SC,DATA/NC O (K,Fi destination)
41 V88
42 TV BP CLK/TV BP CLK 0 Communication clock with TV u-com
(For other destination than K and R)
42 TViBPicLK/NC O (K,R destination)
43 NC 0
44 TUNisDA I/O Communication data with tuner
45 TUN,SCL 0 Communication clock with tuner
46 R DATA/R DATA l DATA input from RDS decoder
(For other destination than X and (V))
45 FLDATA/NC o (x, (V) destination)
47 R QUAL/R QUAL l QUAL input from RDS decoder
(For other destination than X and (V))
47 R,QUAL/NC O (X, (V) destination)
48 EVOLiMUTEO O E-VOL front mute L: ON, H: OFF
49 EVOLiMUTE1 O E-VOL rear mute L: ON, H: OFF
50 EVOLiMUTEZ O E-VOL C-SW mute L: ON, H: OFF
51 EVOLiMUTEB O E-VOLiB-AVOUT mute H: ON, L: OFF
52 EVOLiMUTEC O E-VOLic mute L: ON, H: OFF
53 TV7JUDGE | Determination of TV,BOX if it is old or new H: Old, L: New
54 WRT7E2P I Used when writing into E2P L: Normal condition
H: When writing Into E2P
55 AVSW7PDN 0 Communication ciock with AV switch
56 VILLiR O Brightness control of R in variable illumination
57 V88
58 VILLiG O Brightness control of G in variable illumination
59 VCCZ
60 VILLiB O Brightness control of B in variable illumination
61 NTiPAL l NTSC/PAL determination signal input H: PAL, L: NTSC
62 VMUTE 0 LCD output mute control H: MUTE, L: Normal
63 X0 0 Touch panel control
64 VILLiDET 1 Variable illumination identification terminal L: F3, H: F4