Harman Kardon AVR 255 Service Manual
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Harman Kardon AVR 255 Service Manual

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See also: Owner's Manual
harman/kardon
harman/kardon
AVR 255/230
7 x 50W 7.1 CHANNEL A/V RECEIVER
ESD WARNING
BASIC SPECIFICATIONS
REMOTE RESET
PACKAGE LIST AND PARTS
EXPLODED VIEW AND PARTS
Released EU2008
CONTENTS
2
3
SEMICONDUCTOR PINOUTS
4
PCB DRAWINGS
4
5
WIRING DIAGRAM
6
AMP BIAS ADJUSTMENT
7
8
harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York, 11797
AVR 255/230 Service Manual

Service Manual

Rev 0, 07/2008
9
50
121
129
130
131
132
Page 1 of 144

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Summary of Contents for Harman Kardon AVR 255

  • Page 1: Table Of Contents

    AVR 255/230 Service Manual harman/kardon Service Manual AVR 255/230 7 x 50W 7.1 CHANNEL A/V RECEIVER CONTENTS ESD WARNING ELECTRICAL PARTS LIST BASIC SPECIFICATIONS SEMICONDUCTOR PINOUTS TROUBLESHOOTING GUIDE PCB DRAWINGS PROCESSOR RESET BLOCK DIAGRAM REMOTE RESET WIRING DIAGRAM PACKAGE LIST AND PARTS...
  • Page 2 AVR 255/230 Service Manual Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor "chip"...

  • Page 3: Technical Specifications

    AVR 255/230 Service Manual Technical Specifications Audio Section FM Tuner Section Stereo Mode Frequency Range 87.5–108MHz Continuous Average Power (FTC) Usable Sensitivity IHF 1.3 µV/13.2dBf Signal-to-Noise Ratio Mono/Stereo: 70/68dB (DIN) 65 Watts per channel, 20Hz–20kHz, Distortion Mono/Stereo: 0.2/0.3% @ < 0.07% THD, both channels driven into 8 ohms...

  • Page 4: Troubleshooting Guide

    Protect Warning in Display due to possible short and speaker ends • Amplifier is in protection mode • Contact your local Harman Kardon service depot due to internal problems No sound from surround or • Incorrect surround mode • Select a mode other than Stereo center speakers •...

  • Page 5: Programming The Remote

    Resetting the Remote Memory Remote With Other Devices. As you add components to your home-theater The AVR 355/AVR 255 remote’s punch-through • Manufacturers may use different code sets for system, occasionally you may wish to totally feature allows you to select one component for the same product category.
  • Page 6 AVR 255/230 Service Manual AVR255/230 1. Instruction manual ass'y - Accessories 2. Package Drawing MICROPHONE ASS'Y MANUAL ASS'Y FM 1 POLE ANT BATTERY ASS'Y POLY BAG AM LOOP ANTENNA ASS'Y SNOW PAD (L) SNOW PAD (R) REMOCON ASS'Y IMAGE BROCHURES...

  • Page 7: Disassembly

    DISASSEMBLY AVR255/230 harman/kardon AVR 255/230 Service Manual 1. Removing the Top Cabinet 3. Removing the Rear Panel Remove the Screws Remove the Screws 26 27 4. Removing the Main PCB Remove the Screws 2. Removing the Front Panel Remove the Screws...

  • Page 8: Exploded View

    AVR255/230 EXPLODED VIEW harman/kardon AVR 255/230 Service Manual 40-1 40-4 40-3 39-1 40-5 39-3 38-1 40-7 38-2 39-2 DESCRIPTION PARTS NO. Q,ty REMARK 40-2 ORNAMENT,VOLUME CGU1A318Y CAP,VOLUME CGX1A338MBC63 HOLDER,VOLUME CMH1A214 INDICATOR,VOLUME CGL1A222 BADGE, HARMAN/KARDON CGB1A158Y SHEET,AL FRONT CGX1A390C66X WINDOW , FIP...

  • Page 9: Electrical Parts List

    AVR 255/230 Service Manual AVR255/230 Electrical Parts List Description Value Ref. # Part Number CGB1A193Z BADGE , AVR255 BADGE CGL1A222 INDICATOR , VOLUME INDICATOR CGU1A318Y ORNAMENT , VOLUME AVR255 ORNAMENT CGU1A410A25W WINDOW , FIP WINDOW CGX1A338MBC63 CAP , VOLUME...
  • Page 10 AVR 255/230 Service Manual BOTTOM CHASSIS ASS'Y Value Ref. # Part Number Description CKF7A337Z PANEL , REAR AVR255/230 PANEL CKL1A094 FOOT , A AVR350 FOOT CKL1A095 FOOT , B AVR350 FOOT CLZ9W003Z FERRITE , RING FERRITE RING CMD1A636 BRACKET , PCB...
  • Page 11 AVR 255/230 Service Manual FRONT PCB ASSY Value Ref. # Part Number Description C850 CCBS1H471KBT CAP , CERAMIC(470PF/50V) 470PF 50V C851 CCBS1H471KBT CAP , CERAMIC(470PF/50V) 470PF 50V C852 CCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z C855 CCBS1H101KBT CAP , CERAMIC(100PF/50V)
  • Page 12 AVR 255/230 Service Manual FRONT PCB ASSY Value Ref. # Part Number Description R725 CRD20TJ100T RES , CARBON 10 OHM 1/5W J R727 CRD20TJ104T RES , CARBON 100K OHM 1/5W J R737 CRD20TJ100T RES , CARBON 10 OHM 1/5W J...
  • Page 13 AVR 255/230 Service Manual FRONT PCB ASSY Value Ref. # Part Number Description R920 CRD20TJ102T RES , CARBON 1K OHM 1/5W J R921 CRD20TJ103T RES , CARBON 10K OHM 1/5W J R922 CRD20TJ102T RES , CARBON 1K OHM 1/5W J...
  • Page 14 AVR 255/230 Service Manual FRONT PCB ASSY Value Ref. # Part Number Description VR74 CSR2A037Z ENCODER ENCODER MAIN PCB ASSY Value Ref. # Part Number Description COP12026I AVR255/230 MAIN PCB ASS'Y ASS'Y CHD3A012R SCREW , SPECIAL SCREW C501 CCEA1HH100T...
  • Page 15 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description C816 CCBS1H331KBT CAP , CERAMIC 330PF 50V C817 CCEA1HH100T CAP , ELECT 10UF 50V C818 CCEA1HH100T CAP , ELECT 10UF 50V C819 CCBS1H681KBT CAP , CERAMIC...
  • Page 16 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description D953 CVD1SS133MT DIODE 1SS133 D954 CVD1N4003SRT DIODE , RECT 1N4003 D955 CVD1N4003SRT DIODE , RECT 1N4003 D956 CVD1N4003SRT DIODE , RECT 1N4003 D957 CVD1N4003SRT DIODE , RECT...
  • Page 17 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description Q801 HVTKSC2785YT KSC2785Y Q802 HVTKSC2785YT KSC2785Y Q812 HVTKTA1268GRT KTA1268GR Q813 HVTKTC3200GRT KTC3200GR Q814 HVTKTA1268GRT KTA1268GR Q815 HVTKTC3200GRT KTC3200GR Q816 HVTKTA1268GRT KTA1268GR Q817 HVTKTA1268GRT KTA1268GR Q818 HVTKTC3200GRT...
  • Page 18 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description R532 CRD20TJ221T RES , CARBON 220 OHM 1/5W J R533 CRD20TJ221T RES , CARBON 220 OHM 1/5W J R534 CRD20TJ221T RES , CARBON 220 OHM 1/5W J...
  • Page 19 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description R606 CRD20TJ223T RES , CARBON 22K OHM 1/5W J R607 CRD20TJ223T RES , CARBON 22K OHM 1/5W J R608 CRD20TJ223T RES , CARBON 22K OHM 1/5W J...
  • Page 20 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description R781 CRD20TJ750T RES , CARBON 75 OHM 1/5W J R782 CRD20TJ750T RES , CARBON 75 OHM 1/5W J R783 CRD20TJ750T RES , CARBON 75 OHM 1/5W J...
  • Page 21 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description R901 CRD25TJ393T RES , CARBON 39K OHM 1/5W J R902 CRD25TJ393T RES , CARBON 39K OHM 1/5W J R903 CRD25TJ393T RES , CARBON 39K OHM 1/5W J...
  • Page 22 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description CHD1A012R SCREW , SPECIAL SCREW CHD1A036R SCREW , SPECIAL SCREW CHD3A012R SCREW , SPECIAL SCREW CHG1A412 CUSHION CUSHION CMD1A398 BRACKET , PCB BRACKET CMD1A417 BRACKET , PCB...
  • Page 23 AVR 255/230 Service Manual MAIN PCB ASSY Value Ref. # Part Number Description C638 CCEA1JH101E CAP , ELECT 100UF 63V C639 CCEA1JH101E CAP , ELECT 100UF 63V C640 CCEA1JH101E CAP , ELECT 100UF 63V C807 CCEA1JH101E CAP , ELECT...
  • Page 24 AVR 255/230 Service Manual POWER PCB ASSY Value Ref. # Part Number Description COP12027I AVR255/230 POWER PCB ASS'Y ASS'Y C104 CCBS1E103ZFT CAP , CERAMIC(10000PF/25V) 0.01UF 25V C105 CCBS1E103ZFT CAP , CERAMIC(10000PF/25V) 0.01UF 25V C106 CCFT1H104ZF CAP , SEMICONDUCTOR 0.1UF 50V Z...
  • Page 25 AVR 255/230 Service Manual POWER PCB ASSY Value Ref. # Part Number Description D921 CVD1SS133MT DIODE 1SS133 F110 KBA2D2500TLET FUSE(SR-5,2.5A,250V) SAVE FUSETECH F111 KBA2D2500TLET FUSE(SR-5,2.5A,250V) SAVE FUSETECH Q104 HVTKSC2316YT KSC2316Y Q911 HVTKTA1267YT KTA1267Y Q912 HVTKTC3198YT KTC3198Y Q913 HVTKTC3198YT KTC3198Y...
  • Page 26 AVR 255/230 Service Manual POWER PCB ASSY Value Ref. # Part Number Description R974 CRD20TJ271T RES , CARBON 270 OHM 1/5W J R975 CRD20TJ271T RES , CARBON 270 OHM 1/5W J R976 CRD20TJ470T RES , CARBON 47 OHM 1/5W J...
  • Page 27 AVR 255/230 Service Manual POWER PCB ASSY Value Ref. # Part Number Description JK97 CJJ9W001Z JACK , 9P D-SUB FEMALE(RS-232C, SEMCO) JACK Q851 HVTKTD600KGR T.R , BIAS KTD600KGR Q852 HVTKTD600KGR T.R , BIAS KTD600KGR Q853 HVTKTD600KGR T.R , BIAS...
  • Page 28 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description C309 CCUS1H102KC CAP , CHIP 1000PF 50V K C310 CCUS1H102KC CAP , CHIP 1000PF 50V K C311 CCUS1H102KC CAP , CHIP 1000PF 50V K C312 CCUS1H102KC...
  • Page 29 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description C539 CCUS1H182KC CAP , CHIP 1800PF 50V K C540 CCUS1H182KC CAP , CHIP 1800PF 50V K C601 CCUS1H104KC CAP , CHIP 0.1UF 50V K C603 CCUS1H104KC CAP , CHIP 0.1UF 50V K...
  • Page 30 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description C771 CCUS1H104KC CAP , CHIP 0.1UF 50V K C772 CCUS1H104KC CAP , CHIP 0.1UF 50V K C773 CCUS1H104KC CAP , CHIP 0.1UF 50V K C775 CCUS1H104KC CAP , CHIP 0.1UF 50V K...
  • Page 31 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description L704 CLZ9R005Z FERRITE , CHIP BEAD(60ohm, 1608) HCB1608KF-600T30 L705 CLZ9R005Z FERRITE , CHIP BEAD(60ohm, 1608) HCB1608KF-600T30 Q729 HVTKRC107S T.R , CHIP KRC107S Q730 HVTKRC107S T.R , CHIP...
  • Page 32 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description R237 CRJ10DJ474T RES , CHIP 470K OHM R238 CRJ10DJ474T RES , CHIP 470K OHM R239 CRJ10DJ474T RES , CHIP 470K OHM R240 CRJ10DJ474T RES , CHIP...
  • Page 33 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description R308 CRJ10DJ272T RES , CHIP 2.7K OHM R309 CRJ10DJ272T RES , CHIP 2.7K OHM R310 CRJ10DJ272T RES , CHIP 2.7K OHM R311 CRJ10DJ272T RES , CHIP 2.7K OHM...
  • Page 34 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description R394 CRJ10DJ392T RES . CHIP 3.9K OHM R395 CRJ10DJ392T RES . CHIP 3.9K OHM R396 CRJ10DJ392T RES . CHIP 3.9K OHM R397 CRJ10DJ392T RES . CHIP 3.9K OHM...
  • Page 35 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description R765 CRJ10DJ103T RES , CHIP 100K OHM R766 CRJ10DJ103T RES , CHIP 100K OHM R767 CRJ10DF5101T RES. CHIP (5.1K 1%) 5.1K OHM 1% R768 CRJ10DJ0R0T RES , CHIP...
  • Page 36 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description C343 CCEA1HH100T CAP , ELECT 10UF 50V C344 CCEA1HH100T CAP , ELECT 10UF 50V C345 CCEA1HH100T CAP , ELECT 10UF 50V C346 CCEA1HH100T CAP , ELECT...
  • Page 37 AVR 255/230 Service Manual INPUT PCB ASSY Value Ref. # Part Number Description Q304 HVTKTC2874BT T.R , MUTE KTC2874B Q305 HVTKTC2874BT T.R , MUTE KTC2874B Q306 HVTKTC2874BT T.R , MUTE KTC2874B Q307 HVTKTC2874BT T.R , MUTE KTC2874B Q308 HVTKTC2874BT T.R , MUTE...
  • Page 38 AVR 255/230 Service Manual VIDEO PCB ASSY Value Ref. # Part Number Description R402 CRJ10DJ0R0T RES , CHIP 0 OHM R403 CRJ10DJ0R0T RES , CHIP 0 OHM R411 CRJ10DJ750T RES , CHIP 75 OHM R412 CRJ10DJ750T RES , CHIP...
  • Page 39 AVR 255/230 Service Manual VIDEO PCB ASSY Value Ref. # Part Number Description BN14 CJP13GA117ZY WAFER , CARD CABLE WAFER BN19 CJP07GA117ZY WAFER WAFER BN42 CJP06GB142ZB PIN HEADER(6P, 2.54mm) PIN HEADER BN81 CJP34TT215ZB PIN HEADER , DUAL ROW(34P, 2.0MM, H=19)
  • Page 40 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description C653 CCUI1C104KC CAP , CHIP(1005, 16V/0.1UF) 0.1UF 16V C654 CCUI1C104KC CAP , CHIP(1005, 16V/0.1UF) 0.1UF 16V C655 CCUI1C104KC CAP , CHIP(1005, 16V/0.1UF) 0.1UF 16V C656 CCUI1C104KC CAP , CHIP(1005, 16V/0.1UF)
  • Page 41 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description C774 CCUI1C104KC CAP , CHIP(1005, 16V/0.1UF) 0.1UF 16V C775 CCUS1H103KC CAP , CHIP 0.01UF 50V K C780 CCUI1C104KC CAP , CHIP(1005, 16V/0.1UF) 0.1UF 16V C801 CCSJA0J220B CAP , CHIP TANTAL(A TYPE, 22uF/6.3V, ELNA)
  • Page 42 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description C862 CCUI1C104KC CAP , CHIP(1005, 16V/0.1UF) 0.1UF 16V C863 CCUS1H103KC CAP , CHIP 0.01UF 50V K C864 CCSJA0J220B CAP , CHIP TANTAL(A TYPE, 22uF/6.3V, ELNA) 22UF 6.3V...
  • Page 43 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description C931 CCUS1H104KC CAP , CHIP 0.1UF 50V K C932 CCUS1H104KC CAP , CHIP 0.1UF 50V K C933 CCUS1H104KC CAP , CHIP 0.1UF 50V K C934 CCUS1H104KC CAP , CHIP 0.1UF 50V K...
  • Page 44 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description IC76 CVIA3S56D40ETPG5 I.C, 256MB DDR SDRAM ZENTEL(A3S56D40ETPG5) IC77 CVIES29LV320ET70TG I.C , FLASH ROM 32Mbit IC (TOP BOOST) EXCEL SEMI(ES29LV320ET70TG) IC81 CVIFLI30336AC I.C , VIDEO PROCESSOR...
  • Page 45 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description Q905 CVTKRC103S T.R , CHIP KRC103S Q906 CVTUPA672T F.E.T UPA672T Q907 HVTKRA102S T.R , CHIP KRA102S Q908 CVTKRC103S T.R , CHIP KRC103S Q909 HVTKRC111S TR , CHIP...
  • Page 46 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description R803 CRJ10DJ470T RES , CHIP 47 OHM R804 CRJ10DJ820T RES , CHIP 82 OHM R805 CRJ10DJ820T RES , CHIP 82 OHM R806 CRJ10DJ820T RES , CHIP...
  • Page 47 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description R880 CRJ10DJ103T RES , CHIP 10K OHM R881 CRJ10DJ103T RES , CHIP 10K OHM R882 CRJ10DJ103T RES , CHIP 10K OHM R883 CRJ10DJ103T RES , CHIP...
  • Page 48 AVR 255/230 Service Manual HDMI TORINO PCB ASSY Value Ref. # Part Number Description R953 CRJ10DJ0R0T RES , CHIP 0 OHM R954 CRJ10DJ103T RES , CHIP 10K OHM R955 CRJ10DJ220T RES , CHIP 22 OHM R956 CRJ10DJ101T RES , CHIP...
  • Page 49 AVR 255/230 Service Manual REGULATOR PCB ASSY Value Ref. # Part Number Description IC21 CVIKIA278R00PI I.C , REGULATOR(TO-220IS-4) KEC(KIA278R00PI) IC23 HVIKIA378R05PI REGULATOR(5V OUPUT LOW DROP) KIA378R05PI KEC(KIA378R05PI) IC31 CVIKIA278R00PI I.C , REGULATOR(TO-220IS-4) KEC(KIA278R00PI) IC32 CVIKIA378R09PI I.C , REGULATOR(+9V, 3A, TO-220IS-4)
  • Page 50 AVR 255/230 Service Manual (70 Ω) 2SB1560 Darlington Equivalent circuit Silicon PNP Epitaxial Planar Transistor (Complement to type 2SD2390) Application : Audio, Series Regulator and General Purpose External Dimensions MT-100(TO3P) Absolute maximum ratings (Ta=25°C) Electrical Characteristics (Ta=25°C) 2SB1560 Symbol...
  • Page 51 AVR 255/230 Service Manual Equivalent circuit 2SD2390 Darlington (70 Ω) Silicon NPN Triple Diffused Planar Transistor (Complement to type 2SB1560) Application : Audio, Series Regulator and General Purpose External Dimensions MT-100(TO3P) Absolute maximum ratings (Ta=25°C) Electrical Characteristics (Ta=25°C) Symbol...
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  • Page 53 AVR 255/230 Service Manual 74ACT04 HEX INVERTER HIGH SPEED: t = 5.0ns (TYP.) at V = 5V LOW POWER DISSIPATION: = 2µA(MAX.) at T =25°C COMPATIBLE WITH TTL OUTPUTS = 2V (MIN.), V = 0.8V (MAX.) 50Ω TRANSMISSION LINE DRIVING...
  • Page 54 AVR 255/230 Service Manual 74ACT04 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1, 3, 5, 9, 11, 1A to 6A Data Inputs 2, 4, 6, 8, 10, 1Y to 6Y Data Outputs Ground (0V)
  • Page 55 AVR 255/230 Service Manual 74LCX32 LOW VOLTAGE CMOS QUAD 2-INPUT OR GATE WITH 5V TOLERANT INPUTS 5V TOLERANT INPUTS HIGH SPEED: = 5.2ns (MAX.) at V = 3V POWER DOWN PROTECTION ON INPUTS AND OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE: TSSOP...
  • Page 56 AVR 255/230 Service Manual 74LCX32 Figure 2: Input And Output Equivalent Circuit Table 2: Pin Description Table 3: Truth Table PIN N° SYMBOL NAME AND FUNCTION 1, 4, 9, 12 1A to 4A Data Inputs 2, 5, 10, 13...
  • Page 57 AVR 255/230 Service Manual A3S56D30ETP A3S56D40ETP 256M Double Data Rate Synchronous DRAM Pin Assignment (Top View) 66-pin TSOP DQ15 VDDQ VDDQ VSSQ VSSQ DQ14 DQ13 VSSQ VSSQ VDDQ VDDQ 66pin TSOP(II) DQ12 DQ11 VDDQ VDDQ VSSQ VSSQ DQ10 VSSQ...
  • Page 58 AVR 255/230 Service Manual A3S56D30ETP A3S56D40ETP 256M Double Data Rate Synchronous DRAM PIN FUNCTION SYMBOL TYPE DESCRIPTION Clock: CLK and /CLK are differential clock inputs. All address and control input signals are sampled on the crossing of the positive edge of CLK and...
  • Page 59 AVR 255/230 Service Manual CS42528 2. PIN DESCRIPTIONS 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 CX_SDIN1 RXP1/G PO 1 CX_SCLK RXP2/G PO 2 CX_LRCK RXP3/G PO 3 RXP4/G PO 4...
  • Page 60 AVR 255/230 Service Manual CS42528 C)/Control Port Chip Select (SPI) (Input ) - AD0 is a chip address pin in I C mode; CS AD0/CS Address Bit 0 (I is the chip select signal in SPI mode. Interrupt (Output ) - The CS42528 will generate an interrupt condition as per the Interrupt Mask register.
  • Page 61 AVR 255/230 Service Manual CS42528 CODEC Serial Data Output ( Output ) - Output for two’s complement serial audio data from the internal CX_SDOUT and external ADCs. External ADC Serial Input ( Input ) - The CS42528 provides for up to two external stereo analog to digital...
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  • Page 63 AVR 255/230 Service Manual E S I E S I Excel Semiconductor inc. PRODUCT SELECTOR GUIDE Family Part Number ES29LV320E Voltage Range 2.7V ~ 3.6 V Speed Option Max Access Time (ns) CE# Access (ns) OE# Access (ns) FUNCTION BLOCK DIAGRAM...
  • Page 64 AVR 255/230 Service Manual E S I E S I Excel Semiconductor inc. PIN DESCRIPTION Description A0-A20 21 Addresses DQ0-DQ14 15 Data Inputs/Outputs DQ15 (Data Input/Output, Word Mode) DQ15/A-1 A-1 (LSB Address Input, Byte Mode) Chip Enable Output Enable...
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  • Page 86: Technical Data

    AVR 255/230 Service Manual SEMICONDUCTOR KIA278R00PI TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 2A ADJUSTABLE LOW DROP VOLTAGE REGULATOR The KIA278R00PI is a Low Drop Voltage Regulator suitable DIM MILLIMETERS 10.00 0.20 for various electronic equipments. It provides constant voltage 15.00 0.20...
  • Page 87 AVR 255/230 Service Manual SEMICONDUCTOR KIA278R05PI~KIA278R15PI TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 4 TERMINAL 2A OUTPUT LOW DROP VOLTAGE REGULATOR DIM MILLIMETERS 10.00 0.20 The KIA278R Series are Low Drop Voltage Regulator 15.00 0.20 2.70 0.20 suitable for various electronic equipments.
  • Page 88 AVR 255/230 Service Manual SEMICONDUCTOR KIA378R05PI~KIA378R15PI TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 4 TERMINAL 3A OUTPUT LOW DROP VOLTAGE REGULATOR DIM MILLIMETERS 10.00 0.20 The KIA378R Series are Low Drop Voltage 15.00 0.20 2.70 0.20 Regulator suitable for various electronic equipments.
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  • Page 94: Block Diagram

    AVR 255/230 Service Manual LC72723, LC72723M Pin Assignment (DIP16/MFP16) Block Diagram No. 6037-2/8 Page 94 of 144...
  • Page 95 AVR 255/230 Service Manual LC72723, LC72723M Pin Descriptions Pin No. Function Pin circuit type VREF Reference voltage output (Vdda/2) Output MPXIN Base band (multiplex) signal input Input FLOUT Subcarrier output (filter output) Output Subcarrier input (comparator input) Input Vdda Analog system power supply (+5 V) —...

  • Page 96: General Description

    AVR 255/230 Service Manual ESMT M12L16161A SDRAM 512K x 16Bit x 2Banks Synchronous DRAM FEATURES GENERAL DESCRIPTION The M12L16161A is 16,777,216 bits synchronous high JEDEC standard 3.3V power supply data rate Dynamic RAM organized as 2 x 524,288 words by LVTTL compatible with multiplexed address 16 bits, fabricated with high performance CMOS technology.
  • Page 97 AVR 255/230 Service Manual M24C64 M24C32 64Kbit and 32Kbit Serial I²C Bus EEPROM FEATURES SUMMARY Two-Wire I C Serial Interface Figure 1. Packages Supports 400kHz Protocol Single Supply Voltage: – 4.5 to 5.5V for M24Cxx – 2.5 to 5.5V for M24Cxx-W –...
  • Page 98 AVR 255/230 Service Manual M24C64, M24C32 SUMMARY DESCRIPTION These I C-compatible electrically erasable pro- Table 2. Signal Names grammable memory (EEPROM) devices are orga- E0, E1, E2 Chip Enable nized as 8192 x 8 bits (M24C64) and 4096 x 8 bits (M24C32).
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  • Page 101 AVR 255/230 Service Manual NJM2391 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2391 is low dropout voltage regulators featuring high precision voltage. It is suitable for Notebook PCs, PC cards and hard disks where 3.3V need to be generated from 5V supply.
  • Page 102 AVR 255/230 Service Manual NJM2595 5-INPUT 3-OUTPUT VIDEO SWITCH GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2595 is a 5-input 3-output video switch. Its switches select one from five signals received from VTR,TV,DVD, TV-GAME and others. The NJM2595 is designed for audio items, such as AV amplifier and others.
  • Page 103 AVR 255/230 Service Manual NJM2845/46 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2845 is low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. NJM2845 is 3 terminal type and NJM2846 is ON/OFF control...
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  • Page 105 AVR 255/230 Service Manual NJW1197C PIN FUNCTION SYMBOL FUNCTION SYMBOL FUNCTION ROUT Rch output DCR_IN “Multi-channel selector” Rch input COUT Cch output DCR_OUT “Input selector” Rch output LSOUT LSch output Ground RSOUT RSch output DCL_IN “Multi-channel selector” Lch input...
  • Page 106 AVR 255/230 Service Manual × PIN CONFIGURATION TO-92 • SOT-89 SOT-23-5 • • (mark side) (mark side) (mark side) PIN DESCRIPTION TO-92 SOT-89 SOT-23-5 • • • Pin No. Symbol Pin No. Symbol Pin No. Symbol Page 106 of 144...
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  • Page 108 AVR 255/230 Service Manual ST232 PIN CONFIGURATION PIN DESCRIPTION PIN No SYMBOL NAME AND F UNCTION Positive Terminal for the first Charge Pump Capacitor Doubled Voltage Terminal Negative Terminal for the first Charge Pump Capacitor Positive Terminal for the second Charge Pump Capacitor...
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  • Page 129: Schematic Diagrams

    AVR 255/230 Service Manual AVR254/255/354/355 BLOCK DIAGRAM MIC_AMP HP_IN ALL version 6dB AMP A-BUS OUT +8dB MIC SIG. +40dB AVR355 OPTION NJW1159 PRE-OUT has TUNER module. MAIN AMP HP_AMP PRE AMP +12V MULTI_OUT TO FUNCTION SEL P-AMP H_PHONE OUT...
  • Page 130 AVR255 WIRING.sch-1 - Wed Mar 12 14:10:41 2008 harman/kardon AVR 255/230 Service Manual Page 130 of 144...
  • Page 131 AVR 255/230 Service Manual AMPLIFIER SECTION BIAS ADJUSTMENT Measurement condition .No input signal or volume position is minimum. Standard value .Ideal current = 48mA (± 5%) .Ideal DC Voltage = 25.92mV (± 5%) DC EVM CUP12026* (MAIN PCB) CN66...
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