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Kenwood LZ-702IR - LCD Monitor, Service Manual

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Kenwood LZ-702IR - LCD Monitor Service Manual Download Page 15

LZ-702IR

15

Fig. 2 After TINT adjustment

Fig. 3 After PHASE adjustment

● 

IR-TX (Infrared ray transmission) Frequency ad-

justment (X35-)

Adjustment procedure

Boot up in test mode.

Start the adjustment using TV code on the remote controller

(three-mode remote).

Initial configuration conditions

• Audio output is set normal

• V.Sel causes audio output to switching

• Surround is off

• Frequency is 2MHz

q

Transmit infrared ray at the initial condition. Measure the

frequency of TP804 located closed to IC800 L_OUT (pin

9) using frequency counter, and adjust to 2.3MHz

±

50kHz

Ch1: Input 
signal

Ch2: 
B output

Ch3: 
R output

Ch1: Input 
signal

Ch2: 
B output

Ch3: 
R output

ADJUSTMENT

with VR800.

w

Transmit infrared ray at the initial condition.  Measure the

frequency of TP803 located closed to IC800 R_OUT (pin

8) using frequency counter, and adjust to 2.8MHz

±

50kHz

with VR801.

e

Press “Tenkey” on the remote controller and switching to

3MHz mode.

r

Transmit infrared ray at the condition of 

e

. Measure the

frequency of TP804 located closed to IC800 L_OUT (pin

9) using frequency counter, and adjust to 3.2MHz

±

50kHz

with VR803.

t

Transmit infrared ray at the initial condition. Measure the

frequency of TP803 located closed to IC800 R_OUT (pin

8) using frequency counter, and adjust to 3.8MHz

±

50kHz

with VR802.

●

 Remote controller code

   • Set the switch to “TV” on the remote controller.

Key code

Item

Tenkey1

IR HEADPHONE Surround On/Off

Tenkey2

IR HEADPHONE 2MHz/3MHz

Tenkey3

IR HEADPHONE Normal/Off

∗

 IR: Infrared Ray

●

 Flicker adjustment (X35-)

Conditions

Video source : VIDEO (composite signal)

Video :

Luster white 30%~50%

BRIGHT :

MAX (If using PWM control, it can not be

adjusted due to the frequency component)

MODE :

ZOOM

Adjustment procedure

q

Display luster white 30%~50%.

w

Measure waveform using oscilloscope.

e

Turn VR100 and adjust to make the amplitude of the wave-

form is at minimum.

(For NTSC signal, use 60Hz or 30Hz component.

 For PAL signal, use 50Hz or 25Hz component.)

∗

Make sure that the flicker component level is adjusted

to minimum.

Oscilloscope rate: 20mV, 0.5mS

www. xiaoyu163. com

QQ 376315150

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TEL 13942296513

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2

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TEL  13942296513  QQ  376315150  892498299 

TEL  13942296513  QQ  376315150  892498299 

Summary of Contents for LZ-702IR - LCD Monitor

Page 1: ...HIDEAW AY UNIT TO MONITOR POW ER L R VID EO L R AV O UTPUT VID EO L R Panel assy A64 3922 02 Metallic cabinet A01 4413 02 Escutcheon B07 3174 01 Cord with plug 3 5m E30 6538 05 Screw set N99 1782 05 Accessory W01 1672 04 DC cord with fuse E30 6587 05 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13...

Page 2: ...LL VIDEO BUFFER Q103 104 106 Q105 IC400 REMOTE SENSOR IC401 SENSOR DIMMER HARDWARE KEY S400 405 6 95 BUFFER VIDEO IC304 IC104 LCD IC505 506 Q809 Q803 INCH SCL ACC 14V GND GND SDA REV P ON PARK ACC 14V COMP SYNC D GND REMOTE NDATA TDATA Lch Rch A GND V GND G B R 3 3V P ON 5V SW8 5V SW8V SW5V SW3 3V MIRROR MODE1 3 HPOS1 4 NTSC PAL N P IN VG VB VR V MUTE SW3 3V G OUT B OUT R OUT SPL CX UPSD MENU SCRE...

Page 3: ... ELECTRIC UNIT X34 AV IN1 AV SWITCH CONNECTOR IC501 J801 AV IN2 NAVI AV OUT VIDEO IC103 PROCESSOR LCD 6dB ATT VIDEO SW IC401 IC604 RGB SW VIDEO SW IC401 IC301 u COM OSD IC3 J102 J102 J601 J103 CONTROLLER TIMING AV 1Vp p 1Vp p AV R G B NAVI 2Vp p SYNC 1Vp p 1Vp p 700mVp p RGB 450mVp p RGB 2Vp p 3 9Vp p RGB 1Vp p 1Vp p 2Vp p 1Vp p SYNC 0 70Vp p RGB RGB 1 4Vp p 0 70Vp p RGB 1Vp p 0 70Vp p ELECTRIC UN...

Page 4: ...101 3 3V 5V 3 3V 5V conversion IC103 TIMING CONTROLLER Controls LCD modulator IC104 V MUTE COMPOSER Composes V MUTE signal IC105 HSY VSY COMPOSITE SYNC COMPOSER Composes HSY and VSY composite synchronous signals IC106 MUTE INVERTER Inverts mute signal IC108 3 3V 5V 3 3V 5V conversion IC202 DC DC CONVERTER Controls 14 12V and 18 5V IC300 RESET IC Resets µ com IC301 MPU IC Controls unit X35 IC302 E2...

Page 5: ...N SW Switches DIM SENS or VCOM IN signal Q500 501 DC DC CONVERTER SW Controls DC DC converter Q502 503 POWER SUPPLY SW Supplies power Q504 P ON SW Controls P ON Q505 DC DC CONVERTER SW Controls DC DC converter Q506 ACC DET Detects ACC Q800 IR BAND SW Switches IR band Q801 IR ON OFF SW Controls infrared ray signal Q803 LED DRIVER Drives LEDs Q804 IR SURROUND SW Controls surround effect by using inf...

Page 6: ...ol for speaker Controls by using DUTY of PWM 27 28 NC Not used 29 NDATA I Serial communication from navigation 5V interface 30 TDATA O Serial communication to navigation 5V interface 31 NC Not used 32 OSD R O OSD red output 33 OSD G O OSD green output 34 OSD B O OSD blue output 35 GAMMA DATA O Communication to timing controller IC IC103 W TXD For writing into flash µ com 36 W RXD I For writing int...

Page 7: ...tection L Reverse 70 PKG DET I Parking detection H Parking 71 ADC SW O A D port switching H VCOM IN is selected at pin 92 L DIM SENS is selected 72 PON O Power on H Power supply of SWs are ON 73 74 NC Not used 75 Y0 O Touch panel control signal Refer to the truth value table w 76 77 X0 X1 O Touch panel control signal Refer to the truth value table w 78 MIRROR O AV IN2 mirror reversed image H Rever...

Page 8: ... MICROCOMPUTER STERMINAL DESCRIPTION TEST MODE How to enter the test mode Press and hold the SCRN and keys and reset How to clear the test mode Turn the power off and ACC Off then reset to clear Remote controller Set the switch to TV on the remote controller before using SCRN Hposi Chroma Auto Chroma Func Chroma INFO Test Mode SET UP screen Screen transition While the video is being displayed pres...

Page 9: ...cting the UP or Down items switching the ad justment value by pressing key or key When selecting the Set items confirm or cancel the adjust ment value by pressing key or key When selecting OK items press key and key to write to E2PROM When normal or abnormal result is being displayed cancel the adjustment screen It allows the setup operation using remote controller Refer to the section for Custom ...

Page 10: ...OM s last value Screen adjustment Default is center Click once to change between Full Down Center Full Up BRT default is MAX Auto Dimmer s default is off and Dimmer level is 0 to elimi nate the wait time for switching detection IR HEADPHONE Audio output is set normal V Sel causes audio output to switching Surround is off The frequency is 2MHz E2PROM When booting up in test mode the last value does...

Page 11: ... 0 2step 40 59 36 36 36 3step 60 79 73 73 73 4step 80 99 109 109 109 5step 100 119 146 146 146 6step 120 139 182 182 182 7step 140 159 219 219 219 8step 160 179 255 255 255 Line up the same value shown above starting from the left 1H 61H 121H 181H 241H 301H 361H 421H 60H 120H 180H 240H 300H 360H 420H 480H Vertical Horizontal timing NTSC VD HD Blanking period 3rd step 60H 79H 2nd step 40H 59H 1st s...

Page 12: ...ltage value a from 45 47 49 51 53 at 5H five times e 2 If VCOM_IN at 43H is below 1 6V sampling VG volt age value a from 44 46 48 50 52 at 5H five times and sampling VG voltage value b from 45 47 49 51 53 at 5H five times The timing of sampling is at 38 0µsec 15 from the leading edge of H r Eliminate the maximum and minimum value from the sampled voltage value a voltage value b data five times and...

Page 13: ...to the above average voltage d and Vsbr Adjustment i VCOM_IN Sampling the voltage value at the VCOM_IN and adjust to the adaptation value Positive negative appraisal at the 2nd step is run at 43H and sampling is run between 44H and 53H q Starting with the OSD_VSYNC pulse leading edge count the OSD_HSYNC pulse until a positive nega tive appraisal at 43H of the 2nd step w Check to see if VCOM_IN pul...

Page 14: ...T values to adjust using UP Down keys of remote controller so that oscillation width per each horizontal scanning period would match Refer to Fig 1 and Fig 2 In Fig 1 the oscillation width of R output and B output per horizontal scanning period is not matched In Fig 2 the oscilliation width of R output per horizontal scanning period is matched rAfter adjusting press the final selection key After p...

Page 15: ... closed to IC800 L_OUT pin 9 using frequency counter and adjust to 3 2MHz 50kHz with VR803 tTransmit infrared ray at the initial condition Measure the frequency of TP803 located closed to IC800 R_OUT pin 8 using frequency counter and adjust to 3 8MHz 50kHz with VR802 Remote controller code Set the switch to TV on the remote controller Key code Item Tenkey1 IR HEADPHONE Surround On Off Tenkey2 IR H...

Page 16: ... C506 C509 C511 C514 C607 C608 C609 C618 C619 C622 C101 L101 1 4 5 8 1 12 36 25 37 48 24 13 4 1 8 5 1 8 16 9 1 4 8 5 1 5 8 4 1 4 5 8 1 4 8 5 1 4 8 5 O I G D607 D608 D602 D609 D801 D802 D803 D805 D806 D808 D103 D404 D809 D810 P101 J601 J101 J801 J103 J102 D101 IC604 IC102 IC401 IC603 IC602 IC801 IC201 IC202 IC501 IC601 IC101 ELECTRIC UNIT X34 4320 61 J76 0222 02 Refer to the schematic diagram for t...

Page 17: ... TP103 TP601 TP817 TP818 TP101 TP104 TP105 TP201 TP202 TP203 TP204 TP206 TP207 TP208 TP209 TP401 TP402 TP403 TP404 TP602 TP603 TP604 TP605 TP606 TP607 TP608 TP609 TP610 TP611 TP708 TP801 TP802 TP803 TP804 TP805 TP806 TP807 TP808 TP809 TP810 TP811 TP812 TP813 TP814 TP815 TP816 B E B E B E B E B E B E B E B E D606 Q103 Q404 D201 D202 D203 D204 D205 D206 D603 D604 D605 Q402 Q403 Q405 D105 D601 D804 D...

Page 18: ...R145 R147 R151 R154 R297 R298 R537 R549 C413 C C313 C314 C406 R411 X300 C27 C28 C30 C31 C112 C118 C120 C122 C124 C126 C129 C130 C132 C136 C137 C144 C145 C146 C221 C227 C228 C253 C254 C255 C259 C531 C810 C812 C813 C821 C822 C906 C907 C908 C909 C910 C911 C L5 L901 C537 R123 R1 R4 R5 R8 R9 R10 R21 R22 R23 R24 R34 R38 R41 R43 R45 R52 R53 R54 R55 R56 R57 R60 R61 R62 R63 R64 R65 R66 R68 R75 R117 R118 R1...

Page 19: ... CP308 CP309 CP312 CP313 CP314 CP315 R325 R314 L500 R304 R305 R306 R307 R404 R406 R407 R408 R412 R413 R415 R416 R323 R320 R322 R318 R324 R327 R326 R333 R332 5 4 1 4 5 8 4 1 5 8 8 9 16 G O G O 8 1 4 4 8 5 1 81 80 31 50 51 10 6 1 5 30 2 11 10 1 10 4 5 8 4 B E B E B E B E B E TP308 TP309 TP306 TP33 Refer to the schematic diagram for the values of resistors and capacitors X35 4640 62 Ref No Address IC...

Page 20: ...0 R201 R545 C101 C147 C505 C506 C508 C520 C521 C523 C527 C529 C801 C802 C809 C815 C816 C817 CP300 CP302 R331 R335 CP322 C125 C826 R122 R126 R128 R130 R131 R135 R136 R160 R162 R163 R164 R175 R202 R203 R204 R205 R265 R300 R302 R310 R311 R503 R505 R514 R517 R518 R520 R523 R524 R525 R526 R527 R528 R529 R531 R532 R535 R542 R800 R801 R802 R803 R804 R807 R810 R811 R817 R818 R819 R821 R822 R823 R824 R825 ...

Page 21: ... TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12 TP13 TP14 TP16 TP17 TP18 TP19 TP20 TP21 TP22 TP23 TP24 TP25 TP27 TP28 TP29 TP31 TP900 TP901 TP902 TP903 TP904 TP905 TP906 TP907 TP908 TP909 TP910 TP911 TP912 TP913 TP914 TP915 TP916 TP917 TP918 TP919 TP511 TP40 Refer to the schematic diagram for the values of resistors and capacitors X35 4640 62 Ref No Address IC1 5AB IC101 5Z IC105 5X IC106 5X IC108 5W IC30...

Page 22: ...IN2A 9 10 11 GND2 OUT1 IN1B SW1 5 4 3 2 1 IN1A VCC IN2B GND1 12 13 14 15 16 10K C618 330u6 3 R615 AOUT ASAG GND 4 3 10K 330u6 3 R617 C619 V 5 6 C622 330u6 3 R401 R619 10K 10K AOUT ASAG GND 4 3 BOUT BSAG V 5 6 C211 R209 TP609 TP608 TP601 NAVI G NAVI R GND 75 R601 R605 75 R611 C610 100 100 R612 C611 1 1 NR NG 2 2u50 1K ESD 2200P C225 1000P C224 1000P C210 22u50 C209 2 2u50 R208 100 R207 1K R206 C202...

Page 23: ... 75 R618 75 R808 100 R807 100 R806 100 R805 100 R804 100 R803 100 R802 100 2 4 6 8 10 12 14 16 18 20 1 3 5 7 9 11 13 15 17 19 ACC for INV ACC for DC DC GND GND R G B COMP SYNC PARK SW TDATA VGND NDATA P ON SCL SDA REVERSE SW REMO Lch AGND Rch R414 100 20 R504 100 R502 C624 1 R622 5 6K C506 C509 10u16 10u16 R503 5 6K 5 6K 9 Y1 S21 C1 RV1 6 5 4 V2 S1 8 7 12 RV2 Y2 LV2 11 10 C2 C510 2 2 S22 S2 V3 LV3...

Page 24: ...7 100 R906 100 R908 100 10u16 C821 10u16 C822 C SYNC B G R TP908 TP907 TP906 TP905 TP904 TP903 TP902 TP901 TP900 2W 1 5 R987 2200u16 C904 L901 220u16 C910 220u16 C911 47uH L902 F901 1 25A 47uH TP909 TP910 TP911 TP912 TP913 TP914 TP915 TP916 TP917 TP918 TP919 SCL 70 30 29 69 SDA OUT GND IN IN GND OUT 220u16 C913 47u6 3 C528 0 1 C536 0 1 C524 0 01 C542 18K R545 10K R541 18K R542 36K R986 22u16 C538 ...

Page 25: ...B VLFB FT CCOMP REF VBATT2 OUTR PGND2 BTR OUT VDD NC VSS 4 3 1 2 1 2K R808 1 5K R813 0 015 C227 10 C253 24K R289 180K R237 20K R256 0 R226 R233 180K 1 C254 13K R235 P 21 1 C228 K 74 0 1 C232 0 1 C231 0 1 C252 0 1 C234 27P C255 10 R236 100u16 C823 3K R814 2 2u50 C810 470P C809 5 1K R819 0 1 C826 10K R818 10K R817 47u16 C827 C811 0 1 10u16 C812 39K R822 1 C815 2 2u50 C813 100u16 C814 R825 10K C816 4...

Page 26: ...RXD NTSC PAL MODE3 MODE2 MODE1 HPOS4 HPOS3 HPOS2 HPOS1 R IN G IN B IN DIM SENS VCOM IN YDATA XDATA NC NC NC NC VCCE NC T D 1 2 10 9 8 7 6 5 4 3 2 1 W RXD CNVSS RESET GND EPM W CE W TXD W CLK BUSY 3 3 V 100 CP304 100 CP306 CP325 10K 76 75 77 78 80 10K R334 R337 0 70 69 100 CP312 58 57 59 60 55 100 CP309 51 54 53 52 10K CP310 C317 100P C318 100P C319 100P C320 100P 100P C309 0 01 C325 100 R333 100 R...

Page 27: ...0 10K R31 VDD1 R176 0 17 18 19 20 R30 10K 560 R24 100P TP4 VSY TP33 C40 13 COMPS 14 TP6 15 POLC POLS R26 220 12 NCLP NDSV R74 220 CPV STV1 CX NVD NHD RV HSRV NGOE3 VDD2 STV2 NGOE2 NGOE1 R57 100 28 R58 100 R63 100 TP7 R27 1K R33 R37 1K 25 27 23 22 21 TP8 26 24 25 27 R62 100 R56 100 R60 100 R61 100 31 28 29 30 32 29 30 31 32 SVSEP VDD3 3 XCKE 3 TST3 TST2 TST1 3 3 3 C146 C145 C144 10K 1000P VR C127 R...

Page 28: ... D800 807 DNF324U 4 X35 464x xx TC7SH08FU F NJM2107F ZB IC1 402 901 IC3 TC7SET04FU F IC101 106 1SR154 400 D808 916 D900 901 904 905 STZ6 2N AVRM1608180M6A D909 910 TC200G02G0104 IC4 C128 25 3 579545MHz 0 01 0 01 C129 OSD R OSD G C131 R123 560 1 820P C133 1M R149 1M R139 R144 C135 6800P 10 C132 0 0 1 C138 HFIL IN RIN2 GIN2 18 17 19 CIN CLP ACC FIL AGC FIL VIDEO IN 23 21 20 22 24 TC1 0 01 C140 0 TP1...

Page 29: ... 6271 05 N82 2005 48 N82 2012 43 2 6x6 218 248 252 210 201 756 702 207 PA1 211 212 222 246 Jx2 Jx2 Ax2 Ax2 Ax2 Dx2 Dx2 Cx2 Cx2 C C C Jx2 Jx2 Kx2 Hx2 LCD1 236 721 757 205 237 F1 DC1 with F1 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 ...

Page 30: ... 50WV C204 CD04AY1H220M ELECTRO 22UF 50WV C205 CD04BA1H2R2M ELECTRO 2 2UF 50WV C206 CD04BA1C100M ELECTRO 10UF 16WV C207 CK73GB1H104K CHIP C 0 10UF K C208 CD04AY1H220M ELECTRO 22UF 50WV C209 CD04BA1H2R2M ELECTRO 2 2UF 50WV C210 CD04AY1H220M ELECTRO 22UF 50WV C211 CD04BA1H2R2M ELECTRO 2 2UF 50WV C212 CK73GB1H104K CHIP C 0 10UF K C213 CD04BA1C100M ELECTRO 10UF 16WV C214 CD04AY1H220M ELECTRO 22UF 50WV...

Page 31: ...100M CHIP EL 10UF 16WV C3 CC73HCH1H100D CHIP C 10PF D C4 CK73EB1E225K CHIP C 2 2UF K C5 CK73HB1H102K CHIP C 1000PF K C6 CK73HB1H561K CHIP C 560PF K C7 CC73GCH1H102J CHIP C 1000PF J C8 CK73EB1E105K CHIP C 1 0UF K C9 CK73GB1H104K CHIP C 0 10UF K C10 CK73HB1H102K CHIP C 1000PF K C11 CC73GCH1H102J CHIP C 1000PF J C13 CC73HCH1H390J CHIP C 39PF J C14 CK73EB1A106K CHIP C 10UF K C15 CK73GB1H104K CHIP C 0 ...

Page 32: ...CK73GB1H103K CHIP C 0 010UF K C406 CK73FB1C105K CHIP C 1 0UF K C407 409 CK73GB1H103K CHIP C 0 010UF K C410 CK73GB1H104K CHIP C 0 10UF K C412 CK73GB1H104K CHIP C 0 10UF K C413 CK73FB1C105K CHIP C 1 0UF K C500 CK73FB1C105K CHIP C 1 0UF K C501 CK73GB1A474K CHIP C 0 47UF K C502 CK73GB1H152K CHIP C 1500PF K C503 CK73GB1A105K CHIP C 1 0UF K C504 CK73GB1A474K CHIP C 0 47UF K C505 CK73GB1H103K CHIP C 0 01...

Page 33: ...P R 10 J 1 16W R37 RK73HB1J102J CHIP R 1 0K J 1 16W R38 39 RK73HH1J472D CHIP R 4 7K D 1 16W R40 RK73HB1J102J CHIP R 1 0K J 1 16W R41 RK73HH1J473D CHIP R 47K D 1 16W R42 RK73HB1J000J CHIP R 0 0 J 1 16W R43 RK73HH1J683D CHIP R 68K D 1 16W R44 RK73HB1J000J CHIP R 0 0 J 1 16W R45 RK73HH1J153D CHIP R 15K D 1 16W R46 RK73HH1J101D CHIP R 100 D 1 16W R47 RK73HH1J331D CHIP R 330 D 1 16W R48 RK73HH1J182D CH...

Page 34: ...1J621J CHIP R 620 J 1 16W R320 RK73HB1J101J CHIP R 100 J 1 16W R321 RK73HB1J103J CHIP R 10K J 1 16W R322 RK73HB1J101J CHIP R 100 J 1 16W R324 RK73HB1J101J CHIP R 100 J 1 16W R325 RK73HB1J223J CHIP R 22K J 1 16W R326 329 RK73HB1J101J CHIP R 100 J 1 16W R330 331 RK73HB1J103J CHIP R 10K J 1 16W R332 333 RK73HB1J101J CHIP R 100 J 1 16W R334 RK73HB1J103J CHIP R 10K J 1 16W R337 RK73HB1J000J CHIP R 0 0 ...

Page 35: ...1 302 DAN202U DIODE D303 DAP202U DIODE D400 DA204U DIODE D401 406 UDZS5 1B ZENER DIODE D407 DAN202U DIODE D408 UDZS6 8B ZENER DIODE D500 501 EC31QS04AG DIODE D502 UDZS6 8B ZENER DIODE D800 807 DNF324U 4 INFRARED LED D900 901 STZ6 2N ZENER DIODE D902 903 DA204U DIODE D904 905 STZ6 2N ZENER DIODE D906 907 DA204U DIODE D909 910 AVRM1608180M6A VARISTOR D912 DAP202U DIODE D915 DAP202U DIODE D916 1SR154...

Page 36: ...or system NTSC PAL External video input level RCA jacks 1 0 1Vp p 75Ω External audio input level RCA jacks 1V 55kΩ Video output level RCA jacks 1 0 1Vp p 75Ω Audio output level RCA jacks 1V 1kΩ E Europe K North America M Other Areas W Without Europe SPECIFICATIONS General Operating voltage 14 4V DC 11 16V Current consumption 1 5A Consumed Power 14W Operational temperature range 10 C to 60 C Storag...

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