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akira 21HAP1 Series Service Manual

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Summary of Contents for akira 21HAP1 Series

  • Page 2 CHASSIS: UOC MODEL: 21HAP1/BE Model No: 21HAP1BE Version 1.0...

  • Page 3: Table Of Contents

    CONTENT GENERAL DESCRIPTION ........................4 SAFETY INSTRUCTION ........................7 CIRCUIT ADJUSTMENT........................8 FAULT FINDING TREES, DIAGRAMS & OVERVIEWS ..............14 VARIOUS PARAMETERS OF INTEGRATED CIRCUIT..............22 ELECTRICAL PART LIST ........................26 CIRCUIT DIAGRAM ..........................35 Model No: 21HAP1BE Version 1.0...

  • Page 4: General Description

    GENERAL DESCRIPTION AKPH02 chassis series are applied in A14P01/A21P01 respectively which uses mainly Philips’ advance UOC ultimate chip TDA935X/6X/8X and I C-bus controlled IC. With combination of microcontroller and small signal processor, the TDA935X/6X/8X series feature high-integration, high performance-to-price ratio and high-reliability and advanced functions with fewer external component, which provide much convenience for manufacturing and technical service.
  • Page 5 V-in2 A-in2 L A- i 2 R SIF TRAPS SP161 Video-out V352 Z351,Z352,Z354 8Ω5W Audio- AUDIO AMPLIFIER out L (N101) AN7522N SP162 Audio- AV SWITH V351 out R 8Ω5W N801 CD4052 Video-in1 Audio- VIDEO in1 L Audio- AMPLIFIER TV AUDIO OUT in1 R V912 V913 AV SWITH...

  • Page 6: Safety Instruction

    Do not hold the CRT neck in case of causing damage to the CRT. 2. When the power cord needs replacing, use the same one as that provided by AKIRA factory. 3. Voltage exists between the hot and cold ground when TV is in operation. Install a separation transformer during repairing or connecting to any tester for the sake of safety.

  • Page 7: Circuit Adjustment

    CIRCUIT ADJUSTMENTS GENERAL INFORMATIONS All adjustment are thoroughly checked and corrected when the receiver leaves the factory. Therefore the receiver should operate normally and produce proper color and B/W pictures upon installation. However, several minor adjustments may be required depending on the particular location in which the receiver is operated.
  • Page 8 Adjustment procedure 1. Turn VR501 potentiometer to adjust B+ to specified voltage. 2. Check voltages for video out, vertical out, circuit work and audio power out as follow Voltage (volt) Tolerance 14 inch 21 inch ±2V Video Out ±5V Vertical Out ±1V Circuit Work ±1V...
  • Page 9 Focus adjustment Item AKPH01 chassis Measuring Equipment Preparation Brightness, contrast and color should be set in standard before Adj. Adjustment procedure 1. Receive the cross-hatch pattern signal 2. Turn the focus adjusting VR watching the screen and adjust the vertical line of mark to make the most thin.
  • Page 10 MENU9 CRT cut-off and white balance and sub-brightness adjustment. Receive gray and white 2 steps signal. 1. CRT cut off adjustment. a. Push [P+][P-] key to select “SC”, push [V+][V-] key then automatically vertical scan will be stopped. b. Adjust SCREEN control on Flyback transformer to get the darkest single horizontal line (red, green, or blue, sometimes shows more yellow more purple or more white).
  • Page 11 Horizontal line Shado OSD position adjustment Item AKPH01 chassis Measuring Service remote controller Equipment Preparation Brightness, contrast and color should be set in standard Before Adj. Adjustment procedure 1. Press 5 key on service remote controller to set the set into design mode adjustment 2.
  • Page 12 The functions of the set inspection Item AKPH01 chassis Measuring Equipment User remote controller Preparation The set is turned on Before Adj. Inspection procedure 1. Receive the Philips pattern signal 2. Press PIC key on user remote controller to call the menu as adjusting picture quality. Adjust color, brightness, contrast, sharpness and tint (in NTSC) respectively and all adjustment should be right.

  • Page 13: Fault Finding Trees, Diagrams & Overviews

    FAULT FINDING TREES, DIAGRAMS AND OVERVIEWS 1. Three-None (no raster, no picture, no sound) This failure is mainly caused by big-power circuit such as power supply, horizontal scanning, vertical scanning. The detail checking and repairing steps are as follow. 130V 130V Test the voltage of C528B 115V...
  • Page 14 2. Two-None (no picture, no sound) The failure shows that the set does not display the picture but it has noise wave or blue background or OSD on the screen. This means that the circuits of power supply, horizontal scanning, vertical scanning and video amplification are normal and they are not considered in the repairing.
  • Page 15 Exam the voltage of “ AGC ” on A101 without antenna 3.8V Check R317, R318, R316,C307,A101,N301 Test the voltage on pin 14, 54, 56of N301 Check,L331, C333, L752,C753A, L751, C751 Check N503, N301,C532, R565,C524, Test the voltage on pin 51, 52, 53, 50 of N301 ,VD561,V542 Observe if there is snow-noise-wave disturbance on the CRT via using “Signal-input way ”...
  • Page 16 b. No sound In this kind of failure, first of all we should observe if there is the picture on the CRT. It proves the small signal circuit to work correctly with the picture on the CRT and we only check the sound signal processing and sound amplification circuit.
  • Page 17 3. Only horizontal line in the middle of the screen: If vertical deflection circuit does not work, this kind of failure will happen. In deflection yoke, there only has horizontal sweeping , the electron beam in the CRT only moves in the horizontal orientation, so form this failure. (While checking horizontal and vertical deflection circuit’...
  • Page 18 4. Only vertical line in the middle of the screen This is a dangerous failure. It probable causes flashover and smoking inside the set. Don’ t let your TV work for a long time as this failure appears. Because the electron beam can not move in the horizontal orientation, the failure should be in the horizontal deflection circuit.
  • Page 19 5. UOC does not work In television, remote-control system is similar with the computer system. In theory , it can work if it holds two conditions as follow: The power supply: In general, it is 5V, the error is not above 10% and the disturbance pulse is as small as possible. The clock pulse: In TDA93XX circuit, the clock pulse is generated by pin58 / pin59 of N301 and 12M crystal oscillator.
  • Page 20 6. No OSD (On Screen Display) This failure is usually cause by the circuit of character generated and located. Most of reasons are that the horizontal and vertical flyback pulse signals do not come to UOC. We can judge this failure by measuring the wave of the character in an oscilloscope. The detail checking and repairing steps are as follow: No OSD Check the wave on the pin 7 of FBT...

  • Page 21: Various Parameters Of Integrated Circuit

    VARIOUS PARAMETERS OF INTEGRATED CIRCUIT A: Pin functions of N301 ( TDA9351/61/81 ) Symbol Function Power control & Check, On=Hi- STAND BY Z(input),Off=L(output) IIC-BUS SCL1 IIC-BUS SDA1 TUNING VT output NTSC SW/AC TEST System Key input VOLUME OUTPUT MUTE Mute Output Vss C/P GND connection BAND1...
  • Page 22 G2/YIN G input/ U input B2/UIN B input/ U (B-Y)input BCLIN Beam current limiter input/(V-guard input, note2) BLANKING Blank current input / (V-guard input, note2) R OUT Red output G OUT Green output B OUT Blue output Analog supply of Teletext decoder and digital supply VDDA of TV-processor (3.3V) OPT programming voltage...
  • Page 23 The BUS DATA for TDA9381 Items Variable Preset Items Variable Preset ON/OFF SUBCON 0~63 ON/OFF SUBCOL 0~63 FMWS ON/OFF SUBSHP 0~63 ON/OFF SUBTINT 0~15 ON/OFF YDLY PAL 0~15 ON/OFF YDLY NTSC 0~15 WOOFER ON/OFF YDLY SEC 0~15 DUAL OUT YDLY AV 0~15 Volume mode UOC VOL...
  • Page 24 Directions for use 1. M1/AV CFG Mode Function select TV→AV TV→AV1→AV2 TV→AV1→AV2→S-VIDEO TV→AV1→AV2→S-VIDEO→YUV TV→AV→S-VIDEO TV→AV→S-VIDEO→YUV TV→AV→YUV TV-EURO TV-AV-EURO 2. Method of LOGO input: when E2PROM ADRESS = 0, to adjust E2PROM VALUE may be changed horizontal position of LOGO. It’s range is from 10 to 20. when E2PROM ADRESS =1, to adjust E2PROM VALUE may be changed vertical position of LOGO.

  • Page 25: Electrical Part List

    ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: products marked with a ! have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don’t degrade the safety of the product through improper servicing. NOTE: parts that not assigned part numbers( ) are not available.
  • Page 26 R353 D10B151J-T Carbon resistor RT13-1/6W-180Ω±5% R311 D10B151J-T Carbon resistor RT13-1/6W-220Ω±5% R917 D10B221J-T Carbon resistor RT13-1/6W-220Ω±5% R927 D10B221J-T Carbon resistor RT13-1/6W-220Ω±5% R937 D10B221J-T Carbon resistor RT13-1/6W-220Ω±5% R913 D10B301J-T Carbon resistor RT13-1/6W-300Ω±5% R923 D10B301J-T Carbon resistor RT13-1/6W-300Ω±5% R933 D10B301J-T Carbon resistor RT13-1/6W-300Ω±5% R805 D10B331J-T Carbon resistor...
  • Page 27 R154 D10B472J-T Carbon resistor RT13-1/6W-4.7KΩ±5% R158 D10B472J-T Carbon resistor RT13-1/6W-4.7KΩ±5% R306 D10B472J-T Carbon resistor RT13-1/6W-4.7KΩ±5% R733 D10B472J-T Carbon resistor RT13-1/6W-4.7KΩ±5% R370 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R540 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R701 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R1511 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R153A D10B822J-T Carbon resistor...
  • Page 28 R465 D10B564J-T Carbon resistor RT13-1/6W-560KΩ±5% R404 D10C1R0J-T Carbon resistor RT14-1/4W-1Ω±5% R468 D10C2R7J-T Carbon resistor RT14-1/4W-2.7Ω±5% R513 D10C220J-T Carbon resistor RT14-1/4W-22Ω±5% R561 D10C270J-T Carbon resistor RT14-1/4W-27Ω±5% R486 D10C101J-T Carbon resistor RT14-1/4W-100Ω±5% R161 D10C222J-T Carbon resistor RT14-1/4W-2.2KΩ±5% R1526 D10C222J-T Carbon resistor RT14-1/4W-2.2KΩ±5% R485 D10C103J-T Carbon resistor...
  • Page 29 C701 C2CF121J-T Ceramic capacitor CC1-06A-CH-50/63V-120pF-J C701A C2CF121J-T Ceramic capacitor CC1-06A-CH-50/63V-120pF-J C911 C2BF331K-T Ceramic capacitor CC1-06A-RH-50/63V-330pF-J C921 C2BF331K-T Ceramic capacitor CC1-06A-RH-50/63V-330pF-J C931 C2BF331K-T Ceramic capacitor CC1-06A-RH-50/63V-330pF-J C803 C2BF471K-T Ceramic capacitor CC1-06A-RH-50/63V-470pF-J C805 C2BF471K-T Ceramic capacitor CC1-06A-RH-50/63V-470pF-J C812 C2BF471K-T Ceramic capacitor CC1-06A-RH-50/63V-470pF-J C814 C2BF471K-T Ceramic capacitor...
  • Page 30 C598! C2EM102M-O Ceramic capacitor CTJ1-AC250V-470PF-±20% C515 ! C2EM102M-O Ceramic capacitor CTJ1-AC250V-1000PF-±20% C548 E10C101M-T Electrolytic Capacitor CD110-10V-100uF –M C163A E20C100M-T Electrolytic Capacitor CD110-16V-10uF –M C172 E20C100M-T Electrolytic Capacitor CD110-16V-10uF -M C301 E20C100M-T Electrolytic Capacitor CD110-16V-10uF –M Ref. No Part No. Name Specification C307 E20C100M-T...
  • Page 31 C303 E20F4R7M-T Electrolytic Capacitor CD110-50V-4.7uF –M C304 E20F4R7M-T Electrolytic Capacitor CD110-50V-4.7uF –M C325 E20F4R7M-T Electrolytic Capacitor CD110-50V-4.7uF –M C464 E20F4R7M-T Electrolytic Capacitor CD110-50V-4.7uF -M C703 E20F220M-T Electrolytic Capacitor CD110-50V-22uF -M C462 E20F470M-T Electrolytic Capacitor CD110-50V-47uF -M C466 E21H4R7M-T Electrolytic Capacitor CD110-160V-4.7uF -M C528B E20H101M...
  • Page 32 VD561 DR0001XX-T Diode IS1555/IN4148A VD734 DR0001XX-T Diode IS1555/IN4148A VD911 DR0001XX-T Diode IS1555/IN4148A VD921 DR0001XX-T Diode IS1555/IN4148A VD931 DR0001XX-T Diode IS1555/IN4148A VD1514 DR0001XX-T Diode IS1555/IN4148A VD1516 DR0001XX-T Diode IS1555/IN4148A VD1518 DR0001XX-T Diode IS1555/IN4148A VD912 DR0002XX-T Diode BAV21 VD922 DR0002XX-T Diode BAV21 VD932 DR0002XX-T Diode...
  • Page 33 V933 RXC421X Audion BF421/BF423 V912 RXC422X Audion BF422/BF420 V922 RXC422X Audion BF422/BF420 V932 RXC422X Audion BF422/BF420 V450 RXC2383X-T Audion 2SC2383-O V1512 RXC3807X Audion 2SC3807/2SC5070 V1513 RXC5287X Audion 2SD1710/2SC4584/C5586 V121 RXC945XX-T Audion 2SC945/2SC1815/2SC536E V122 RXC945XX-T Audion 2SC945/2SC1815/2SC536E V173 RXC945XX-T Audion 2SC945/2SC1815/2SC536E V351 RXC945XX-T Audion...

  • Page 34: Circuit Diagram

    CIRCUIT DIAGRAM N101 AN7522N R915 V912 R917 VE901 12K/2W BF420 R918 64SX504Y22-DC01 1.5K 1/2W B OUT V911 +3.3V 2SC2330 R928 G OUT +5V-1 C161 1.5K 1/2W XS161 XP161 R913 V913 VD912 R938 C911 R OUT R745 BF421 R916 +12.5V 1000u/50V BAV21 R728 330P...

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