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Cameron KS21TK305A Service Manual
Summary of KS21TK305A
Page 1
Service manual color television receiver model: ks21tk305a pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 2: Contents
Service manual 2 contents i. Important service safety information… ……3 ii. Alignment procedures please read before attempting service… 5 iii. Tv specification…………… …………… …… ……...5 iv. Tv adjustment 7 v. Ic information………………… ……………………… … ....12 1. Philips uociii chip (n603) 12 2. Switch power ic (n90...
Page 3
Service manual 3 important service safety information operating the receiver outside of its cabinet or with its back removed involves a shock hazard. Work on these models should only be performed by those who are thoroughly familiar with precautions necessary when working on high voltage equipment. ...
Page 4
Service manual 4 high voltage system remove static charges from it by connecting a 10k ohm resistor in series wan insulated wire(such as test probe) between the picture tube dag and 2nd anode lead(have ac line cord disconnected from ac supply). The picture tube use in this receiver employ integral i...
Page 5: Alignment Procedures
Service manual 5 alignment procedures please read before attempting service 1. Use an isolation transformer when performing any service on this chassis. 2. Never disconnect any leads while receiver is in operation. 3. Disconnect all power before attempting an repairs. 4. Do not short any position of...
Page 6
Service manual 6 pal dk/bg/i secam dk/bg 2.3 scanning lines & frequencies 525 lines/60hz or 625 lines/50hz 15.75khz/15.625khz 2.4 color sub-carrier: 4.433mhz/3.579mhz 2.5 if: picture 38.9mhz sound 5.5/6.5mhz 2.6 power consumption: 75w; 2.7 power supply: ac 110-240v 50hz±10% 2.8 audio output power (7...
Page 7: Tv Adjustment
Service manual 7 main power switch remote sensor standby indicator menu select tv/av select program and volume up/down 5. Tv’s terminals 75 Ω aerial terminal 3 av inputs 1 s-video input 1 y/u/v input 1 av output 6. Other informations 6.1 magnetic field: bv = 0.3~0.65gs 6.2 standard colour temperatur...
Page 8
Service manual 8 control at least 5 times immediately. 2. Press the menu buttons to select the desired factory menu pages or press 0-9 number buttons to enter the factory menu pages directly and then press the prog.+/- buttons to select the desired items. 3. Press the vol+/- buttons to change the se...
Page 9
Service manual 9 rf agc adjustment 1. Receive a 60dbμv gray scale signal(pal or secam). 2. Enter factory menu and select agc take over, then adjust it until the picture noise is just disappeared. Focus adjustment 1. Receive five circles pattern, adjust the pattern to normal mode. 2. Adjust focus pot...
Page 10
Service manual 10 hor.Shift 50（60） xx adjust it so that the left half is symmetrical with the right half (h. Cen correction). Ew parabola 50（60） xx adjust it so that parallelogram will be transformed to rectangle or trapezium (receive cross hatch signal)(parallelogram correction). Trapezium 50（60） x...
Page 11
Service manual 11 blog-n xx blog-w xx blog-c xx wpr-n xx wpr-w xx wpr-c xx wpr-n xx wpg-w xx wpg-c xx wpr-n xx wpb-w xx wpb-c xx other factory menu data tv model factory menu item 2108 21f08 1402 21sl39 29f08 txt-on 0 0 0 0 teletext lang 0 0 0 0 teletext e/w 0 0 0 0 track. Mode 0 0 0 0 factory adjus...
Page 12: Ic Information
Service manual 12 russia frequency 0 0 0 0 italy frequency 0 0 0 0 spain frequency 0 0 0 0 turkey frequency 0 0 0 0 german frequency 0 0 0 0 adjustment11 poland frequency 0 0 0 0 op dyn.Skin tone 0 0 0 0 op trusur 0 0 0 0 op rotation 0 0 0 0 op equal 0 0 1 1 op audio config 0 0 1 1 factory adjustmen...
Page 13
Service manual 13 • digital sound processing circuit • digital video processing circuit the uociii series consists of the following 3 basic concepts: • stereo versions. These versions contain the tv processor with a stereo audio selector, the tcg -controller, the multi-standard stereo or btsc decode...
Page 14
Service manual 14 signal at the svo/ifvout output. * automatic y/c signal detector * integrated luminance delay line with adjustable delay time * picture improvement features with peaking (with switchable centre frequency, depeaking, variable positive/negative peak ratio, variable pre-/overshoot rat...
Page 15
Service manual 15 * horizontal and vertical geometry processing with horizontal parallelogram and bow correction and horizontal and vertical zoom * low-power start-up of the horizontal drive circuit 1.2.2 sound demodulation * separate sif (sound if) input for single reference qss (quasi split sound)...
Page 16
Service manual 16 * auxiliary ram page pointer * 16-bit data pointer * stand-by, idle and power down modes * 24 general-purpose i/o pins * 14 bits pwm for voltage synthesis tuning * 8-bit a/d converter with 4 multiplexed inputs * 5 pwm (6-bits) outputs for analogue control functions * i2c byte level...
Page 17
Service manual 17 * curtaining effect via software 1.3 quick reference data pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 18
Service manual 18 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 19
Service manual 19 1.4 block diagram note: tda12062block diagram 1.5 pinning information pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 20
Service manual 20 note: tda12062’s pinning pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 21
Service manual 21 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 22
Service manual 22 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 23
Service manual 23 1.6 power & reset management there are three power saving modes, stand-by, idle and power down, incorporated into the tcg -controller die. When utilizing either mode, the 3.3v power to the device (vddp & vdda) should be maintained, the 1.8v power to digital core except 80c51 and pa...
Page 24
Service manual 24 sound decoder, rds, isp, acquisition, display, display ram and digital video interface. The software reset is executed by initially setting the corresponding bit to ‘1’ followed by clearing the bit to ‘0’. The reset is launched after the falling edge of this process. It takes appro...
Page 25
Service manual 25 • watchdog timer • uart, sad and pwms to enter idle mode the idl bit in the pcon register must be set. The watchdog timer must be disabled prior to entering idle to prevent the device being reset. It is advice to use the rcp (remote control pre-processor) during the idle mode to re...
Page 26
Service manual 26 there are three methods of exiting power down: • the first method to wake up from power-down is to use one of these two external interrupts: ex0 and ex1. The interrupt ex2 cannot be used to wake up the system. Since the clock is stopped, these external interrupts needs to be set le...
Page 27
Service manual 27 1.8 functional description video processor 1.8.1 vision if amplifier the vision if amplifier can demodulate signals with positive and negative modulation. The pll demodulator is completely alignment-free. The vco of the pll circuit is internal and the frequency is fixed to the requ...
Page 28
Service manual 28 signals before they are sent to a digital signal processor. These signals have to be supplied to the sound if inputs. In this mode the if reference frequency is fixed at 43.008 or 49.152 mhz. It is also possible to supply an external reference signal to demodulator. The demodulator...
Page 29
Service manual 29 linear phase detector and a constant input signal amplitude are required. For this reason the intercarrier signal is internally supplied to the demodulator via a gain controlled amplifier and agc circuit. To improve the selectivity an internal bandpass filter is connected in front ...
Page 30
Service manual 30 demodulator has to be set to one of the fixed frequencies (43.008 mhz or 49.152 mhz) by the ifa -ife bits in subaddress 31h. The i.F. Centre frequency depends on the i.F. Downmix frequency and the fm demodulator settings. The bandwidth of the rif filter should be between 200 and 30...
Page 31
Service manual 31 independent of the synchronisation and can be used to switch the time-constant of the horizontal pll depending on the presence of a video signal (via the vid bit). In this way a very stable osd can be realised. The result of the video ident circuit can be read from the output bit s...
Page 32
Service manual 32 reference oscillator of the tcg m-controller. To obtain a stable on-screen-display (osd) under all conditions it is important that the first control loop is switched off or set to low gain when no signal is available at the input. The input signal condition is detected by the video...
Page 33
Service manual 33 • vertical shift • vertical zoom • vertical scroll • vertical linearity correction. When required the linearity setting for the upper and lower part of the screen can have a different setting. • horizontal shift • ew width • ew parabola width • ew upper and lower corner parabola co...
Page 34
Service manual 34 1.8.9 chroma, luminance and feature processing some versions contain a 4h/2h (2d) adaptive pal/ntsc comb filter. The comb filter is automatically activated when standard cvbs signals are received. A signal is considered as “standard signal” when a pal or ntsc signal is identified a...
Page 35
Service manual 35 • blue-stretch. This circuit is intended to shift colour near ‘white’ with sufficient contrast values towards more blue to obtain a brighter impression of the picture. • dynamic skin tone (flesh) control. This function is realised in the yuv domain by detecting the colours near to ...
Page 36
Service manual 36 acl circuit is designed such that it only reduces the chroma signal and not the burst signal. This has the advantage that the colour sensitivity is not affected by this function. The secam decoder contains an auto-calibrating pll demodulator which has two references, viz: the divid...
Page 37
Service manual 37 in the new configuration the cut-off level of the picture tube is controlled with a continuous loop whereas the correction of the amplitude of the output signals is realised by means of a digital loop. As a consequence the current measurement can be controlled from the m-processor....
Page 38
Service manual 38 certain window (wbc-bit) or below or above this window (hbc-bit). This indication can be read from the status byte 01 and can be used for automatic adjustment of the vg2 voltage during the production of the tv receiver. During this test the vertical scan remains active so that the ...
Page 39
Service manual 39 the control concept for the audio processor is based on the following new features: • pre-defined setups for the sound processing modes like dolby® pro logic® and virtual dolby® surround (422, 423) • flexible configuration of audio outputs to the loudspeaker configuration with an a...
Page 40
Service manual 40 2.3 functions of each terminal pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 41
Service manual 41 2.4 example application circuit 2.5 pin configuration pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 42
Service manual 42 2.6 electrical characteristics in mosfet pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 43
Service manual 43 3. Vertical deflection booster (n401) 3.1 stv9302b (used in tv model 1402/2108/21f08) 3.1.1 main features ■ power amplifier ■ flyback generator ■ output current up to 2.5 app ■ thermal protection ■ stand –by control 3.1.2 description the stv9325 is a vertical deflection booster des...
Page 44
Service manual 44 3.1.4 internal block diagram pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
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Service manual 45 3.1.5 absolute maximum ratings pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
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Service manual 46 3.1.6 electrical characteristics pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 47
Service manual 47 3.1.7 dc-coupled application when dc coupled , the display vertical position can be adjusted with input bias. On the other hand, 2 supply sources (vs and -vee) are required. A stand-by state will be reached by switching off the positive supply alone, in this state,where both inputs...
Page 48
Service manual 48 3.1.7.1 centering 3.1.7.2 peak current 3.1.7.3 ripple rejection when both ramp signal and bias are provided by the same driver ic, you can gain natural pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 49
Service manual 49 rejection of any ripple caused by a voltage drop in the ground, if you manage to apply the same fraction of ripple voltage to both booster inputs. For that purpose, arrange an intermediate point in the bias resistor bridge, such that (r8 / r7) = (r3 / r2), and connect the bias filt...
Page 50
Service manual 50 the tda2615 is a dual power amplifier in a 9-lead plastic single-in-line (sil9mpf) medium power package. It has been especially designed for mains fed applications, such as stereo radio and stereo tv. 4.1.3 quick reference data 4.1.4 block diagram pdf 文件使用 "pdffactory pro" 试用版本创建 w...
Page 51
Service manual 51 4.1.5 functional description the tda2615 is a hi-fi stereo amplifier designed for mains fed applications, such as stereo radio and stereo tv. The circuit is optimally designed for symmetrical power supplies, but is also well-suited to asymmetrical power supply systems. An output po...
Page 52
Service manual 52 4.1.7 pinning 5. Eeprom 24c16 (n602) 5.1 features • write protect pin for hardware data protection – utilizes different array protection compared to the at24c16a • low-voltage and standard-voltage operation – 2.7 (vcc = 2.7v to 5.5v) pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.C...
Page 53
Service manual 53 • internally organized 2048 x 8 (16k) • 2-wire serial interface • schmitt trigger, filtered inputs for noise suppression • bi-directional data transfer protocol • 400 khz (2.7v) clock rate for at24c16a • 16-byte page write modes • partial page writes are allowed • self-timed write ...
Page 54
Service manual 54 5.4 block diagram 5.5 pin description serial clock (scl): the scl input is used to positive edge clock data into each eeprom device and negative edge clock data out of each device. Pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 55
Service manual 55 serial data (sda): the sda pin is bidirectional for serial data transfer. This pin is open-drain driven and may be wire-ored with any number of other open-drain or open collector devices. Device/page addresses (a2, a1, a0): the a2, a1 and a0 pins are device address inputs. The at24...
Page 56
Service manual 56 acknowledge: all addresses and data words are serially transmitted to and from the eeprom in 8 bit words. The eeprom sends a zero to acknowledge that it has received each word. This happens during the ninth clock cycle. Standby mode: the at24c16a features a low power standby mode w...
Page 57: Tv Block Diagram
Service manual 57 tv block diagram uoc iii tda12062h1/n1f00 tunerr tda2615 crt board power ic str6753 speaker vertical circuit stv9325a if av1/svhs input r,g,b +b +21v -12v +12v +8v 5v +5v +9v +b +12v -12v 24c16 +21v rf i²c saw filt er cr t ~220 av2/ycbcr input av output i²c horizontal circuit pdf 文...
Page 58
Service manual 58 appendix 1: schematic circuit diagram 1. Main board 35009395 2. Crt board 35008607 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 59
Service manual 59 appendix 2: pcb layout diagram 1. Main board 35009395 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 60
Service manual 60 2. Crt board 35008607 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
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Service manual 61 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
Page 62
Service manual 62 appendix 3: exploded views pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
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Service manual 63 pdf 文件使用 "pdffactory pro" 试用版本创建 www.Fineprint.Com.Cn.
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Pdf 文件以 "pdf 制作工厂" 试用版创建 http://www.Fineprint.Com.
Page 66
Ks21tk305a assembly 36033108 36031315 36031314 36033109.
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Cam350 pro v 7.0 : fri jul 14 14:22:01 2006 - (untitled) pdf 文件以 "pdf 制作工厂" 试用版创建 ÿ http://www.Fineprint.Com.
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Cam350 pro v 7.0 : fri jul 14 14:22:44 2006 - (untitled) pdf 文件以 "pdf 制作工厂" 试用版创建 ÿ http://www.Fineprint.Com.