Related Manuals for Rolsen 21C19/PF21C19
Summary of Contents for Rolsen 21C19/PF21C19
- Page 1 FILE NO. SM-CTV-O-099 COLOR TELEVISION SERVICE MANUAL MODEL NO. 21C19/PF21C19 CHASSIS NO. EX-1A1 Please read this manual carefully before service...
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Page 2: Table Of Contents
TABLE OF CONTENTS SAFETY INSTRUCTIONS AND MAINTENANCE ········································ X-RAY RADIATION PRECAUTION ··································································································· SAFETY PRECAUTION ···················································································································· PRODUCT SAFETY NOTICE············································································································ SAFETY SYMBOL DESCRIPTION ··································································································· MAINTENANCE································································································································· ADJUSTMENTS ······················································································································ SET-UP ADJUSTMENTS··················································································································· CIRCUIT ADJUSTMENTS ················································································································· STRUCTURE AND CHASSIS FUNCTION DESCRIPTION ··············· STRUCTURE BLOCK DIAGRAM··································································································· BLOCK DIAGRAM FOR SUPPLY VOLTAGE SYSTEM ·································································... -
Page 3: X-Ray Radiation Precaution
SERVICE MANUAL INSTRUCTIONS FOR SERVICE SAFETY AND MAINTENANCE “ ” WARNING: BEFORE SERVICING THIS CHASSIS, READ THE X-RAY RADIATION PRECAUTION “ ” “ ” SAFETY PRECAUTION PRODUCT SAFETY NOTICE INSTRUCTION BELOW. X-RAY RADIATION PRECAUTION 1. The EHT must be checked every time the TV is serviced to ensure that the CRT does not emit X-ray radiation as result of excessive EHT voltage. -
Page 4: Product Safety
SERVICE MANUAL avoid electronic gun magnetized and decrement in convergence of the CRT. 6. When remounting the TV chassis, ensure that all guard devices, such as nonmetal control buttons, switch, insulating sleeve, shielding cover, isolating resistors and capacitors, are installed on the original place. -
Page 5: Maintenance
SERVICE MANUAL This is an international hazard symbol, telling you that the components identified by the symbol have special safety-related characteristics. This symbol tells you that the critical components identified by the FDA marking have special safety-related characteristics. This symbol tells you that the critical components identified by the UL marking have special safety-related characteristics. -
Page 6: Adjustments
SERVICE MANUAL ADJUSTMENTS SET-UP ADJUSTMENTS The following adjustments should be made when a complete realignment is required or a new picture tube is installed. Perform the adjustments in the following order: 1. Color purity 2. Convergence 3. White balance Notes: ①... - Page 7 SERVICE MANUAL Dummy Wedge Deflection Coil Rubber Wedge Adhesive Purity/Convergence Deflection Yoke Magnet Module Glass Cloth Tapes Fig. 1 6-pole Magnet Fixed 4-pole Magnet Adjust the Angle (Vertical Lines) Rotate Two Tabs At the Same Time (Horizontal Lines) Purity Magnet Adjustment of Magnets Convergence Magnet Assembly Fig.
- Page 8 SERVICE MANUAL obtained. 2.2 Circumference convergence adjustment 2.2.1 Loosen the clamp screw holding the deflection yoke assembly and allow it tilting. 2.2.2 Temporarily put the first wedge between the picture tube and deflection yoke assembly. Move front of the deflection yoke up or down to obtain better convergence in circumference. Push the mounted wedge in to fix the yoke temporarily.
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Page 9: Circuit Adjustments
SERVICE MANUAL CIRCUIT ADJUSTMENTS Preparation: Circuit adjustments should be made only after completion of set-up adjustments. Circuit adjustments can be performed using the adjustable components inside the TV set. For TVs with C bus control, first change the bus data. 1. - Page 10 SERVICE MANUAL 4.3 Receive a normal TV signal. Rotate knob of the FCB until you get a sharp picture. 5. Safety Inspection 5.1 Inspection for insulation and voltage-resistant Perform safety test for all naked metal of the TV. Supply high voltage of 3000V AC, 50Hz (limit current of 10mA) between all naked metal and cold ground.
- Page 11 SERVICE MANUAL 5VSL/6VSL Vertical slope (for large-screen only) 5VAM/6VAM Vertical amplitude; For 50Hz, “5VAM” is displayed；for 60Hz, “6VAM” is displayed. 5SCL/6SCL Set to the optimal S correction mode 5VSH/6VSH Set to the optimal Vertical center mode 5VOF/6VOF Set to the optimal OSD vertical center mode Vertical zoom (for large-screen only)
- Page 12 SERVICE MANUAL Notes: ① The data marked with “*”have been adjusted in the MANUFACTURE mode. Take care when in service and adjustment. ② To write in logo, use the ↓/↑buttons to highlight an adjustment and the ←/→ buttons to adjust. ③...
- Page 13 SERVICE MANUAL OP_GERMAN German OP_INDIA Indonesian OP_MALAYSIA Malay OP_FMWS Window selection of sound pll: small/large window OP_DIRECT_SWIT Memory power-on (If turned off by the remote control, CH_ON then the TV is turned on by the remote control; if turned off by the MAIN POWER SWITCH, then turned on by the MAIN POWER SWITCH.) OP_HCO EHT tracking mode...
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Page 14: Structure And Chassis Function Description
SERVICE MANUAL STRUCTURE AND CHASSIS FUNCTION DESCRIPTION 1. STRUCTURE BLOCK DIAGRAM From IF Pre- Antenna Audio/Video Tuner Amplifier Analog Switc h A101 HEF4053 Input/Output SAWF Band 1,2 Vt,AGC EEPROM IIC BUS AT24C08 Video Amplifier Microcontroller and small signal processor Formed of Rem ote R e m o t e CH05T0102... -
Page 15: Block Diagram For Supply Voltage System
SERVICE MANUAL 2. BLOCK DIAGRAM FOR SUPPLY VOLTAGE SYSTEM VD491 +190V To CRT RGB PCB VD451 +45V To A100,N401 VD461 +16V T400 To N401 VD471 To A100, N100, N442 N650 +115V VD891 VD871 +15-S +5V-2 N441 To A100 To N600 Bridge Rectifying Power Regulat ion Switch... - Page 16 SERVICE MANUAL 3. CHASSIS DESCRIPTION 1). General Description EX-1A1 chassis series are applied in 21C19/PF21C19 respectively which uses mainly Philips’ advanced 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 components, which provide much convenience for manufacturing and technical service.
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Page 17: Service Data
SERVICE MANUAL SERVICE DATA 1. KEY ICS TECHNICAL DATA 1.1 Microcontroller and small signal processor TDA935X/6X/8X The super chips TDA935X/6X/8X are good in pins compatibility. Differences among them are shown as follows. TDA9351（48K） PAL/NTSC/SECAM+1 PAGE TELETEST TDA9350（48K） PAL/NTSC+1 PAGE TELETEST TDA9361（64K）... - Page 18 SERVICE MANUAL ● PAL/NTSC or multi-standard colour decoder with automatic search system ● Internal base-band delay line ● RGB control circuit with ‘Continuous Cathode Calibration’, white point and black level offset adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently.
- Page 19 SERVICE MANUAL ● Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters ● Signal quality detector for video and WST/VPS data types ● Comprehensive teletext language coverage ● Full Field and Vertical Blanking Interval (VBI) data capture of WST data Display ●...
- Page 20 SERVICE MANUAL 3) Block Diagram...
- Page 21 SERVICE MANUAL...
- Page 22 SERVICE MANUAL 4) pinning SYMBOL DESCRIPTION P1.3/T1 port 1.3 or Counter/Timer 1 input P1.6/SCL port 1.6 or I C-bus clock line P1.7/SDA port 1.7 or I C-bus data line P2.0/TPWM port 2.0 or Tuning PWM output P3.0/ADCO/PWMO port 3.0 or ADC0 input or PWM0 output P3.1/ADC1/PWM1 port 3.1 or ADC1 input or PWM1 output P3.2/ADC1/PWM2...
- Page 23 SERVICE MANUAL SYMBOL DESCRIPTION B2/UIN 2nd B input/U (B-Y) input BCLIN beam current limiter input/(V-guard input, note2) BLKIN black current input/(V-guard input, note2) Red output Green output Blue output VDDA analog supply of Teletext decoder and digital supply of TV-processor (3.3V) OTP programming Voltage VDDC...
- Page 24 SERVICE MANUAL Fig.8 Pin Configuration (SDIP 64)
- Page 25 SERVICE MANUAL 1.2 Electronic switch circuit HEF4053 Triple 2-channel Analog Multiplexer/Demultiplexer (low impedance ON-state) by Sn. With 1). Description The HEF4053 is a triple 2-channel analog HIGH, all switches are in the high impedance multiplexer/demultiplexer with a common enable OFF-state, independent of S to S and V are the supply voltage connections...
- Page 26 SERVICE MANUAL Pinning to Y Independent inputs/outputs Independent inputs/outputs 1A to to S Select inputs Enable input (active LOW) to Z Common inputs/outputs 3. Function Table Fig. 10 Pinning Diagram Inputs Channel HEF4053P(N): 16-lead DIL; plastic (SOT38-1) HEF4053D(F): 16-lead DIL; ceramic none (cerdip) (SOT74)
- Page 27 SERVICE MANUAL 1.3 Sound power amplifier TDA7057AQ 2×8W Stereo BTL Audio Output Amplifier with DC Volume Control 1). Features 2). General Description ・DC volume control The TDA7057AQ is a stereo BTL output amplifier ・Few external components with DC volume control. The device is designed for ・Mute mode use in TVs and monitiors, but is also suitable for ・Thermal protection...
- Page 28 SERVICE MANUAL 1.4 Vertical scan output stage circuit TDA8356/N6 DC-coupled vertical deflection circuit TDA8356 1) Features ● Few external components ● Highly efficient fully DC-coupled vertical output bridge circuit ● Vertical flyback switch ● Guard circuit ● Protection against: Short-circuit of the output pins (7 and 4) Short-circuit of the output pins to VP.
- Page 29 SERVICE MANUAL 1.5 Audio effect processor TDA7449 TDA7449 TONE CONTROLDIGITALLY CONTROLLED AUDIO PROCESSORINPUT MULTIPLEXER 1) Features - 2 stereo inputs - selectableinput gain for optimal Adaptationto different sources One stereo output Treble, and bass control in 2.0db Steps Volumecontrol in 1.0db steps Two speaker attenuators: - two independentspeakercontrol In 1.0dbsteps for balancefacility - independent mute function All function are programmable via...
- Page 30 SERVICE MANUAL 4) Pin Connection Fig.16 5) Electrical Characteristics...
- Page 31 SERVICE MANUAL ELECTRICAL CHARACTERISTICS (refer to the test circuit Tamb = 25°C, VS = 9V,RL= 10KΩ, RG = 600Ω, all controls flat (G = 0dB), unless otherwise specified) NOTE1: 1) The device is functionally good at Vs = 5V. a step down, on Vs, to 4V does’t reset the device. 2) BASS and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
- Page 32 SERVICE MANUAL 1.6 EEPROM AT24C08 1) Features ・Data EEPROM internally organized as 1024/2048 2) Pin Configuration bytes and 64/128 pages×16 bytes ・Page protection mode, flexible page-by-page hardware write protection -Additional protection EEPROM of 64/128 bits, bit per data page 1-Protection setting for each data page by writing its protection bit -Protection management without switching WP pin ・Low power CMOS...
- Page 33 SERVICE MANUAL 1.7 Power module STR-G5653/6454R Switch-mode Power Supply STR- G5653/F6654 The Series STR-G5653/F6654 is specifically designed to satisfy the requirements for increased integration and reliability in off-line quasi-resonant flyback converters. The series incorporates a high-precise error amplifying control and drive circuit with discrete avalanche-rated power MOSFET, featuring fewer external components, small-size and standard power supply.
- Page 34 SERVICE MANUAL 3). Pin Configuration and Functions Fig.19 3.1) Pin function for STR-G5653 Pin No. Symbol Function Description MOSFET drain MOSFET source Ground Supply voltage input for control circuit OCP/FB Over-current protection detection signal/ voltage-limiting signal input 3.2) Pin function for STR-F6654 Pin No.
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Page 35: Waveforms Of Key Points
SERVICE MANUAL WAVEFORMS OF KEY POINTS NI00 NI00 Pin58 Pin33 NI00 NI00 Pin34 Pin44 NI00 NI00 Pin21 Pin22 BU250 BSC60H 8DX-B -HEAT... - Page 36 SERVICE MANUAL BCT-4 N100 Pin4 -P40 Notes: The waveforms are only for reference. ① The waveforms may differ dependent on different models. ②...
- Page 37 SERVICE MANUAL 4. KEY ICS SERVICE DATA Table 3 Function and Service Data of TDA7057AQ (N600)’s Pins Digital Multimeter : Victor DT890D Reference Positive Nerative Function description Voltage (V) Resistance Resistance (KΩ) (KΩ) Vertical drive input (positive) 22.6 18.6 Vertical drive input (negative) Feedback input 22.6 18.6...
- Page 38 SERVICE MANUAL Ground Ground Ground Control signal input 0.03 13.5 13.1 Control signal input 0.03 13.5 13.1 Control signal input 0.03 13.5 13.1 Signal input 22.2 47.0 Signal output 22.2 47.0 Signal input 21.9 26.0 Audio output 21.9 26.0 Supply voltage Table 6 Function and Service Data of TDA7449 (N650)’s Pins Digital Multimeter : Victor DT890D...
- Page 39 SERVICE MANUAL P1.7/SDA P2.0/TPWM 36.2 17.9 P3.0/ADC0/PWM0 11.8 12.3 P3.1/ADC1/PWM1 P3.2/ADC2/PWM2 0.02 13.5 13.5 P3.3/ADC3/PWM3 10.7 VSSC/P P0.5 0.01 13.3 13.3 P0.6 11.6 11.0 VSSA SECPLL 27.6 21.7 DECDIG 23.1 16.1 PH2LF 27.5 `21.0 PH1LF 27.9 21.2 GND3 DECBG 24.4 18.7 AVL/EWD (1) 0.01...
- Page 40 SERVICE MANUAL CHROMA 26.8 20.9 AUDOUT /AMOUT(1) 27.5 21.5 INSSW2 R2/VIN 28.0 21.7 G2/YIN 28.0 21.7 B2/UIN 28.0 21.7 BCLIN 27.6 20.8 BLKIN 27.9 21.3 VDDA 11.0 11.3 VDDC 11.0 11.3 OSCGND 0.02 XTALIN XTALOUT RESET VDDP 11.0 11.3 P1.0/INT1 P1.1/T0 P1.2/INT0 18.2...
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Page 41: Replacement Of Parts
SERVICE MANUAL 4. REPLACEMENT OF PARTS 4.1 Description Many electrical and mechanical components in this chassis have special safety-related characteristics. Components which have these special safety characteristics in this manual and its supplements are identified by the international hazard symbols or UL, FCC, FDA or VDE marking on the circuit diagram and parts list. - Page 42 C I R C U I T D I A G R A M F O R 2 1 C 1 9 / P F 2 1 C 1 9...
- Page 45 MAIN PCB...
- Page 46 CRT RGB PCB...