Download
Share
Print this page
  1. Manuals
  2. Brands
  3. akira Manuals
  4. TV
  5. 14FES1/BE
  6. Service manual

akira 14FES1/BE Service Manual

Colour tv
Hide thumbs

Advertisement

Quick Links

Download this manual
C
o
C
o
C
o
S
e
r
v
i
S
e
r
v
i
S
e
r
v
i
l
o
u
r
T
l
o
u
r
T
l
o
u
r
T
c
e
M
a
c
e
M
a
c
e
M
V
V
V
n
u
a
l
n
u
a
a
n
u
a
l
l

Advertisement

loading
Need help?

Need help?

Do you have a question about the 14FES1/BE and is the answer not in the manual?

Questions and answers

Related Manuals for akira 14FES1/BE

Summary of Contents for akira 14FES1/BE

  • Page 2 Model: Model No: 14FES1BE Version 1.0...

  • Page 3: Table Of Contents

    CONTENT GENERAL DESCRIPTION ........................4 SAFETY INSTRUCTIONS ........................6 CIRCUIT ADJUSTMENTS........................7 FAULT FINDING TREES, DIAGRAMS AND OVERVIEWS ............13 VARIOUS PARAMETERS OF INTEGRATED CIRCUIT..............21 ELECTRICAL PARTS LIST......................... 26 CIRCUIT DIAGRAM ..........................36 Model No: 14FES1BE Version 1.0...

  • Page 4: General Description

    GENERAL DESCRIPTION AKTP01 /02 chassis series are applied A14T02/A14T02a respectively which uses mainly TOSHIBA’ advanced UOC-ultimate chip TMPA8803/8821 and I C-bus controlled IC With combination of micro controller and small signal processor, the TMPA8803/8821 series feature high-integration, high- performance-to-price ratio and high-reliability and advanced functions with fewer external components, which provide much convenience for manufacturing and technical service.
  • Page 5 Y IN C700 SP701 AUDIO AMPLIFIER Cr IN 16Ω (N701) LA4267 Cb IN VIDEO or VIDEO IN2 AUDIO AUDIO SP702 AUDIO IN2 AV1/AV2 16Ω VIDEO IN1 VIDEO SWITH AUDIO IN1 (N203)CD4053 SIF TRAPS VIDEO OUT Z302,Z304 AUDIO OUT SWICH V202 V201 IF IN VIDEO...

  • Page 6: Safety Instructions

    4. When replacing a burnout fuse, use the one with the same specifications as the original. 5. When replacing old wire, wind new one round the shaft to weld. When replacing components with safety in performance, use the same type as that specified by AKIRA and install it in the former way.

  • Page 7: Circuit Adjustments

    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 RP551 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 Inspection procedure 1. Input the TV signal which system is designated in technical specification 2. Switch TV system to the set by pressing SYS key on user remote controller according to the TV system in SG. The picture and sound must be normal. 3.
  • Page 10 White balance adjustment Item AKTP01/02 chassis Measuring SG and white balance meter Equipment No.1 service remote controller Preparation Warm up the set for more than 30 min. before Adj. Brightness, contrast and color should be set in standard Adjustment procedure 1.
  • Page 11 Adjustment procedure 1. Receive the 5-circles pattern signal that is 50HZ vertical frequency 2. Press V-LINE, V-SIZE, V-CENT and H-CENT key on NO.2 service remote controller respectively to select the vertical linearity, height, center (position) and horizontal center (position) adjustment, and then press + or - key to adjust the value of them respectively according to factory’s specification.
  • Page 12 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. 3.

  • Page 13: Fault Finding Trees, Diagrams And Overviews

    FAULT FINDING TREE, DIAGRAMS AND OVERVIEW 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 Test the voltage of C561 115V ＜...
  • Page 14 2. B 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 ＜ 2V Exam the voltage of “ AGC ” on A101 without antenna ＞ 3.8V Check R119, R213, R101,C101,A101,N204 Test the voltage on pin 17, 29, 49of N204 Check,L305, C311, L302,C302, L204, C238 Check N902, N204, L901,C914, R327,C307, Test the voltage on pin 25, 9, 36, 44 of N204 ,L201,C209, C230, L230 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 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 d. 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 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: 1) The power supply: In general, it is 5V, the error is not above 10% and the disturbance pulse is as small as possible. 2) The clock pulse: In TMPA88XX circuit, the clock pulse is generated by pin6 / pin7 of N204 and 8M crystal oscillator.
  • Page 20 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 4 of FBT...

  • Page 21: Various Parameters Of Integrated Circuit

    VARIOUS PARAMETERS OF INTEGRATED CIRCUIT A: Pin functions of N204 ( TMPA8803/23/21 ) Symbol Function BAND1 BAND data output 1 BAND2 BAND data output 2 Key input GND connection RESET Reset signal input 8 MHz oscillator connecting XOUT 8 MHz oscillator connecting TEST GND connection 5V power supply...
  • Page 22 Symbol Function Black Det Terminal to be connected with Black Det filter for black stretch. Chroma PLL Terminal to be connected with APC filter for chroma demodulation. IK in Input terminal to sense ACB cathode current. RGB Vcc Vcc terminal for RGB circuit. Supply 5V. R out Output terminal for R signal.
  • Page 23 THE BUS DATA FOR TMPA8803 Adjustment Adjustment Function Type Data Item RCUT Red Dard Balance GCUT Green Dark Balance BCUT Blue Dark Balance GDRV Green light Balance BDRV Blue light Balance CNTX Sub Contrast Max BRTC Sub-bright Centre COLC Sub Color Center(NTSC) TNTC Sub Tint Center COLP...
  • Page 24 Adjustment Adjustment Function Type Data Item HITS Vertical amplitude deflection of 60Hz VLIN Vertical line of 50 Hz Vertical S correction/50 Hz VLIS Vertical line deflection of 60 Hz Vertical S correction/60 Hz SECAM B-Y Black SECAM R-Y Black BRTS Sub bright (difference) RAGC RF AGC...
  • Page 25 Adjustment Adjustment Function Type Data Item CUR STEP Factory Data AUSTP When Mute off ,Vol.ATT up step number MODE0 Factory Data MODE1 Factory Data OSDF OSD width OSD position Factory Data NOTE: The data provided in the form provides to consult only! Model No: 14FES1BE Version 1.0...

  • Page 26: Electrical Parts 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 27 Ref. No Part No. Name Specification R621 D10B151J-T Carbon resistor RT13-1/6W-150Ω±5% R106 D10B221J-T Carbon resistor RT13-1/6W-220Ω±5% R107 D10B221J-T Carbon resistor RT13-1/6W-220Ω±5% R310 D10B221J-T Carbon resistor RT13-1/6W-220Ω±5% R205 D10B271J-T Carbon resistor RT13-1/6W-270Ω±5% R236 D10B271J-T Carbon resistor RT13-1/6W-270Ω±5% R237 D10B271J-T Carbon resistor RT13-1/6W-270Ω±5% R238 D10B271J-T...
  • Page 28 Ref. No Part No. Name Specification R443 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R511 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R920 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R1002 D10B562J-T Carbon resistor RT13-1/6W-5.6KΩ±5% R322 D10B822J-T Carbon resistor RT13-1/6W-8.2KΩ±5% R947 D10B822J-T Carbon resistor RT13-1/6W-8.2KΩ±5% R102 D10B103J-T Carbon resistor RT13-1/6W-10KΩ±5% R255 D10B103J-T...
  • Page 29 Ref. No Part No. Name Specification R211 D10B334J-T Carbon resistor RT13-1/6W-330KΩ±5% R247 D10B564J-T Carbon resistor RT13-1/6W-560KΩ±5% R632 D10C330J-T Carbon resistor RT14-1/4W-33Ω±5% R519 D10C221J-T Carbon resistor RT14-1/4W-220Ω±5% R960 D10C471J-T Carbon resistor RT14-1/4W-470Ω±5% R245 D10C182J-T Carbon resistor RT14-1/4W-1.8KΩ±5% R526 D10C222J-T Carbon resistor RT14-1/4W-2.2KΩ±5% R559 D10C392J-T...
  • Page 30 Ref. No Part No. Name Specification C315 C2CF220J-T Ceramic capacitor CC1-06A-CH-50/63V-22pF-J C247 C2CF330J-T Ceramic capacitor CC1-06A-CH-50/63V-33pF-J C901 C2CF330J-T Ceramic capacitor CC1-06A-CH-50/63V-33pF-J C602 C2BF101K-T Ceramic capacitor CC1-06A-RH-50/63V-100pF-J C612 C2BF101K-T Ceramic capacitor CC1-06A-RH-50/63V-100pF-J C622 C2BF101K-T Ceramic capacitor CC1-06A-RH-50/63V-100pF-J C235 C2BF181K-T Ceramic capacitor CC1-06A-RH-50/63V-180pF-J C908 C2BF221K-T...
  • Page 31 Ref. No Part No. Name Specification C291 E20C4R7M-T Electrolytic Capacitor CD110-16V-4.7uF –M C292 E20C4R7M-T Electrolytic Capacitor CD110-16V-4.7uF –M C296 E20C4R7M-T Electrolytic Capacitor CD110-16V-4.7uF -M C293 E20C100M-T Electrolytic Capacitor CD110-16V-10uF –M C294 E20C100M-T Electrolytic Capacitor CD110-16V-10uF –M C306 E20C100M-T Electrolytic Capacitor CD110-16V-10uF –M C558 E20C100M-T...
  • Page 32 Ref. No Part No. Name Specification C215 E20F1R0M-T Electrolytic Capacitor CD110-50V-1uF –M C216 E20F1R0M-T Electrolytic Capacitor CD110-50V-1uF –M C217 E20F1R0M-T Electrolytic Capacitor CD110-50V-1uF –M C236 E20F1R0M-T Electrolytic Capacitor CD110-50V-1uF –M C245 E20F1R0M-T Electrolytic Capacitor CD110-50V-1uF -M C103 E20F2R2M-T Electrolytic Capacitor CD110-50V-2.2uF –M C300 E20F2R2M-T...
  • Page 33 Ref. No Part No. Name Specification VD1001 DL0008XX RED 5mm VD230 DR0001XX-T Diode IS1555/IN4148A VD232 DR0001XX-T Diode IS1555/IN4148A VD233 DR0001XX-T Diode IS1555/IN4148A VD401 DR0001XX-T Diode IS1555/IN4148A VD514 DR0001XX-T Diode IS1555/IN4148A VD516 DR0001XX-T Diode IS1555/IN4148A VD558 DR0001XX-T Diode IS1555/IN4148A VD601 DR0001XX-T Diode IS1555/IN4148A VD901...
  • Page 34 Ref. No Part No. Name Specification V552 RXB892XX-T Audion 2SB892/2SB985T V101 RXC2216X-T Audion 2SC2216 V601 RXC2482X Audion 2SC2482 V611 RXC2482X Audion 2SC2482 V621 RXC2482X Audion 2SC2482 V444 RXC2383X-T Audion 2SC2383-O V512 RXC3807X Audion 2SC3807/2SC5070 V501 RXC5287X Audion 2SD1710/2SC4584/C5586 V102 RXC945XX-T Audion 2SC945/2SC1815/2SC536E V103...

  • Page 35: Circuit Diagram

    CIRCUIT DIAGRAM 本 电 路 图 中 的 数 值 会 由 于 基 本 电 路 的 改 良 而 有 所 变 更 . ,恕 不 另 行 通 知 . 未 表 注 功 率 的 电 阻 均 为 1/6W。 电...