Kenwood LZ-702W Service Manual
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Kenwood LZ-702W Service Manual

Wide lcd touch screen monitor
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See also: Training Manual , Instruction Manual
WIDE LCD TOUCH SCREEN MONITOR
LZ-702W

SERVICE MANUAL

Panel assy
(A64-3921-02)
PWR
V.OFF
SP
AV OUT
VOLUME
OFF
MODE
SCRN
V.SEL
MODE
MENU
Cord with plug (3.5m)
(E30-6538-05)
Accessory
(W01-1672-04)
WIDE LCD TOUCH SCREEN MONITOR
Mounting hardware
(W01-1621-05)
© 2006-2 PRINTED IN JAPAN
B53-0379-00 ( N ) 960
Metallic cabinet
(A01-4406-02)
DC cord (with fuse)
(E30-6587-05)
This product uses Lead Free solder.
Screw set
(N99-1782-05)
Escutcheon
(B07-3174-01)

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Summary of Contents for Kenwood LZ-702W

  • Page 1: Service Manual

    WIDE LCD TOUCH SCREEN MONITOR LZ-702W SERVICE MANUAL © 2006-2 PRINTED IN JAPAN B53-0379-00 ( N ) 960 Panel assy Metallic cabinet (A64-3921-02) (A01-4406-02) WIDE LCD TOUCH SCREEN MONITOR V.OFF AV OUT VOLUME MODE SCRN V.SEL MODE MENU Cord with plug (3.5m)

  • Page 2: Block Diagram

    LZ-702W BLOCK DIAGRAM ELECTRIC UNIT (X34- ) J102 AV-IN J103 AV-OUT IC201 VIDEO IC501 R513,514 ISOLATION IC401 VOUT1 -6dB Q401 AV-SW VOUT2 J801 LOUT2 IC202 ROUT2 ISOLATION A.GND LOUT1 ROUT1 COMP/SYNC J601 IC603 V.GND NAVIGATION INTERFACE IC603 SYNC IC604 V.GND D.GND...

  • Page 3: Level Diagram

    LZ-702W LEVEL DIAGRAM LEVEL DIAGRAM (AUDIO) ELECTRIC UNIT (X34) IC201 J102 J103 960mV AV-IN1 ISO AMP AV-OUT 1Vrms (1kHz) IC501 980mV IC202 J102 980mV AV-IN2 ISO AMP AV SWITCH 590mV 930mV 1Vrms (1kHz) VIDEO UNIT (X35) J801 IC601 J601 930mV...

  • Page 4: Components Description

    LZ-702W COMPONENTS DESCRIPTION ELECTRIC UNIT (X34-4320-60) Ref. No. Application / Function Operation / Condition / Compatibility IC101 8.5V REG Regulates 8.5V IC102 5V REG Regulates 5V IC201 ISO AMP Audio input isolation amplifier (AV-IN2) IC202 ISO AMP Audio input isolation amplifier (AV-IN1)
  • Page 5 LZ-702W COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility IC501 DC-DC CONVERTER Controls SW8V and SW8.5V IC502 ACC5.0V REG Composes ACC5.0V IC503 ACC3.3V REG Composes ACC3.3V IC505 SW5.0V REG Composes SW5.0V IC506 SW3.3V REG Composes SW3.3V...
  • Page 6 LZ-702W MICROCOMPUTER’S TERMINAL DESCRIPTION SYSTEM µ-COM : IC301 (X35- : VIDEO UNIT) Pin No. Pin Name Application Processing / Operation / Description VHOLD1 Not used Pull-down to VSS HLF1 Not used Pull-down to VSS I2C BUS interface clock I2C BUS interface data...

  • Page 7: Microcomputer's Terminal Description

    LZ-702W MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing / Operation / Description If level is “L” when INT1 is detected, it is judged PWR POWER KEY PWR key detection key is pressed. SCRN KEY SCRN key detection “L” : It is judged SCRN key is pressed...
  • Page 8 LZ-702W MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Table q : Monitor type switching FRONT OEM+ REAR TYPE 0 TYPE 1 w : Touch panel input mode Touch Waiting Reading “X” Reading “Y” detection e : Display mode switching FULL NORMAL WIDE...

  • Page 9: Test Mode

    LZ-702W TEST MODE How to enter the test mode HPOSI screen Press and hold the [SCRN] and [Volume_Up] keys and reset. • After Screen Position Adjustment, save the memory into the E2PROM. Adjust in the following order. OSD → VIDEO → NAVI •...
  • Page 10 LZ-702W TEST MODE SYSTEM screen Screen adjustment • SYSTEM 1/2/3 screens are the same as in normal mode • Default is center. Click once to change between Full_Down ↔ Center ↔ Full_Up. (user mode). • BRT default is MAX. • Auto_Dimmer’s default is off, and Dimmer level is 0 to elimi- •...
  • Page 11 LZ-702W ADJUSTMENT γ Curve auto adjustment (X35-) Freerun frequency adjustment (X35-) γ Curve adjustable screen Adjustment procedure: Connect the display as required NTSC Line When γ curve auto adjustment is ran, q In order to set NHD (pin 22) entry to null on the timing...
  • Page 12 LZ-702W ADJUSTMENT Step Positive/Negative Appraisal Sampling Enabling Line 53 at 5H five times. 1st step 24H~35H e-2 If VCOM_IN at 43H is below 1.6V, sampling VG volt- 2nd step 44H~55H age value a from 44, 46, 48, 50, 52 at 5H five times,...
  • Page 13 LZ-702W ADJUSTMENT sampled voltage value c data (five times), and calcu- Vsbr late the average. Calculate the VG amplitude by subtracting averaged voltage value a from averaged voltage value c. Change the BRIGHT, GAMMA1 setting etc. on the value from t and adjust to the adaptation value.
  • Page 14 LZ-702W ADJUSTMENT γ Curve adjustment procedure IC103 measure and adjust as shown below. e First, monitor R-output, and change the TINT values to Adjustment Adjustment Adjustment Adaptation item requirement waveform value/STEP adjust using [UP/Down] keys of remote controller. so that...
  • Page 15 LZ-702W ADJUSTMENT Adjustment procedure q Display luster white 30%~50%. Ch1: Input w Measure waveform using oscilloscope. signal e Turn VR100 and adjust to make the amplitude of the wave- form is at minimum. (For NTSC signal, use 60Hz or 30Hz component.
  • Page 16 LZ-702W PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-4320-60 (J76-0222-02) C609 C614 C608 IC601 R216 C601 C603 J601 R217 C607 C616 C203 D609 IC201 C613 C204 R623 IC501 R610 C207 C205 C502 R807 J801 C209 IC604 R803 IC801 C612 R801...
  • Page 17 LZ-702W PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-4320-60 (J76-0222-02) R501 TP205 TP204 R203 TP209 R202 TP607 TP601 TP603 R204 R603 R507 TP604 TP203 R602 TP606 TP609 TP202 TP602 R205 TP207 TP208 TP201 C224 TP801 TP802 TP803 TP804 TP805 TP806...
  • Page 18 LZ-702W PC BOARD (COMPONENT SIDE VIEW) VIDEO UNIT X35-4640-60 (J76-0223-02) C813 F901 L902 L901 L800 R987 IC80 IC801 F501 Q501 C812 L502 C549 Q503 C910 R534 C531 C911 D906 IC501 C906 R521 R549 C821 D909 R806 VR500 D910 Q502 R805...
  • Page 19 LZ-702W C819 C807 C823 IC802 Q807 C824 VR802 C805 IC803 3M:R VR801 C519 2M:R IC800 C825 VR803 IC505 3M:L IC804 C534 X35-4640-60 C539 Ref. No. Address Q504 C300 IC302 IC103 C315 R308 R327 IC104 C303 IC303 Q505 R312 R326 IC202...
  • Page 20 LZ-702W PC BOARD (FOIL SIDE VIEW) VIDEO UNIT X35-4640-60 (J76-0223-02) D805 D807 D806 D804 D803 R820 TP801 R821 TP802 C809 Q818 R819 R809 Q819 C801 R801 R808 TP805 R800 R812 Q812 C802 R532 TP509 C522 D915 R531 Q800 TP803 R539...
  • Page 21 LZ-702W D800 D803 D802 D801 TP900 TP901 TP902 TP903 TP904 TP905 TP906 TP907 X35-4640-60 TP908 R901 D900 TP909 TP910 Ref. No. Address R903 TP911 R929 TP912 R933 TP913 TP914 R921 TP915 IC101 R905 TP916 TP917 D904 IC105 TP918 R907 TP919...
  • Page 22 LZ-702W ELECTRIC UNIT (X34-432x-xx) R216 J102 TP204 AVIN2 CVBS R203 TP205 AV IN2 VGND 4.7V R217 ISO AMP IC201 TP209 AVIN1 CVBS C502 C207 10u16 4.2V R202 8.5V BIAS TP210 AOUT AVIN1 VGND 4.6V 4.7V CIN1 R204 C203 BOUT 4.3V TP203 2.2u50...
  • Page 23 TP819 ACC (for DC/DC) TP820 ACC (for INV) • DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units. LZ-702W (1/2) X34-4320-60 (2/2)
  • Page 24 LZ-702W VIDEO UNIT (X35-464x-xx) J900 F901 L902 R987 1.25A 47uH TP900 ACC(INV) ACC INV L901 TP901 47uH TP902 GND(INV) TP903 R913 0 C907 4.7 TP904 Q812 ACC3.3V R914 0 C908 4.7 TP905 ANALOG MUTE R915 0 C909 4.7 TP906 Q812...
  • Page 25 LZ-702W LZ-702W ONLY RIPPLE FILTER Q807 SW8V C810 R817 C826 C809 OP AMP 2.2u50 470P 0.5W SP AMP Q808 R818 IC802 IC801 TP801 CN801 R819 2.4V 5.1K 4.0V 8.1V Q812 OUT- C817 0.1V 4.0V SPEAKER ANALOG TP802 0.47 MUTE GND1 GND2 4.0V...
  • Page 26 CP308 NDATA FRONT MONITOR CP305 CP303 Q300,301 D303 Q301 RESET SW CP323 NCLP DIMMER SENSOR R414 R410 IC304 TP408 IC401 LZ-702W ONLY Q202 0-2.6V R405 TOUCH PANEL 3.3V TOUCH ∗ Y1 SW C202 PANEL TP400 X1 SW Q202 Q200 Q204...
  • Page 27 LZ-702W C110 22u16 R173 C33 MO 1 MO 2 MO 3 680P 10u16 100P 1000P FULL Q103 R118 NORMAL C146 WIDE 1000P ZOOM R121 1.8V 5.0V CINEMA GAMMA 4.7K B-SIGNAL BUFFER 1.8V 1.9V R147 3K R146 Q104 R124 PLL LPF...
  • Page 28 0-62 customer. VISUAL LINE AUDIO LINE • DC voltages are as measured with a high impedance GND LINE voltmeter. Values may vary slightly due to variations be- B LINE B LINE tween individual instruments or/and units. LZ-702W (2/2) X35-4640-60 (5/5)

  • Page 29: Exploded View (Unit)

    LZ-702W EXPLODED VIEW (UNIT) 2.6x6 N09-6271-05 1.7x6 N09-6416-05 N82-2005-48 N82-2012-43 (with F1) N80-3008-41 N89-3006-48 N80-3008-41 X35- X34-432 LCD1 Parts with the exploded numbers larger than 700 are not supplied.

  • Page 30: Parts List

    LZ-702W PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No. Description Ref. No.
  • Page 31 LZ-702W PARTS LIST ELECTRIC UNIT (X34-4320-60) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation J103 E63-0919-05 PIN JACK R611-613 RK73FB2B101J CHIP R J 1/8W J601 E56-0868-05 CYLINDRICAL RECEPTACLE R614 RK73GB2A102J CHIP R 1.0K J 1/10W...
  • Page 32 LZ-702W PARTS LIST Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation C126 CK73GB1H103K CHIP C 0.010UF K VIDEO UNIT (X35-4640-60) C127 CK73GB1H102K CHIP C 1000PF CK73HB1E103K CHIP C 0.010UF K C128 CK73HB1E103K CHIP C 0.010UF K...
  • Page 33 LZ-702W PARTS LIST VIDEO UNIT (X35-4640-60) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation C403 CE32BM1C100M CHIP EL 10UF 16WV C821,822 CE32CL1C100M CHIP EL 10UF 16WV C404,405 CK73GB1H103K CHIP C 0.010UF K C823 CE32BJ1C101M...
  • Page 34 LZ-702W PARTS LIST VIDEO UNIT (X35-4640-60) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R28,29 RK73HB1J000J CHIP R J 1/16W R134 RN73GH1J222D CHIP R 2.2K D 1/16W R30,31 RK73HB1J103J CHIP R J 1/16W R135,136...
  • Page 35 LZ-702W PARTS LIST VIDEO UNIT (X35-4640-60) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R311 RK73HB1J101J CHIP R J 1/16W R526 RK73GB2A330J CHIP R J 1/10W R312 RK73HB1J332J CHIP R 3.3K J 1/16W R527...
  • Page 36 LZ-702W PARTS LIST VIDEO UNIT (X35-4640-60) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation D401-406 UDZS5.1B ZENER DIODE Q500,501 IMZ4 TRANSISTOR D407 DAN202U DIODE Q502,503 2SJ599-Z-E D408 UDZS6.8B ZENER DIODE Q504 DTA124EUA DIGITAL TRANSISTOR...
  • Page 37 LZ-702W CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value...

  • Page 38: Specifications

    Hideaway unit ...................... 143 x 37 x 99mm ......................... 5-5/8 x 1-7/16 x 4-7/8inch Weight Monitor unit ....................... 460g (1.01lbs) Hideaway unit ......................390g (0.86lbs) KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.

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