Related Manuals for Aiwa TV-CN202
Summary of Contents for Aiwa TV-CN202
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Page 1: Service Manual
TV-CN202 NH1C3 SERVICE MANUAL COLOR TELEVISION This Service Manual is the "Revision Publishing" and replaces "Simple Manual" (S/M Code No. 09-995-333-9T1). S/M Code No. 09-995-333-9R1... -
Page 2: Specifications
SPECIFICATIONS Category: Color television Earphone Jack Mini jack TV Broadcasting System: NTSC-M Operating Temperature 5°C – 40°C Channel Coverage: TV: 2 – 69 Operatin Humidity 35% – 80% Cable (CATV): 5A, 2 – 13,A-5 – A-1, Dimensions 520 (W) x 479.5 (D) x 425 (H) mm A–W, W+1 –... -
Page 4: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS HIGH-VOLTAGE CAP (ANODE CAP) REMOVAL Anode cap 1-1. Cautions before Removing CRT GND Discharge the anode voltage The anode voltage is not discharged completely from the CRT of this unit even after the power is turned off. Be sure to discharge the residual anode voltage before removing the anode cap. - Page 5 2. ANODE CAP REINSTALLTION Anode cap Observe the cautions carefully so that no accident occurs due to a defect in installing the anode cap and Left Right so it does not come off. 2-1. Caution before Reinstalling Never turn the anode cap after installing it Never re-use the hook when it has been deformed If the anode cap is turned after it is installed, it may Fig.
- Page 6 Turn over the rubber cap symmetrically on the left and right. (See Figure 4) Caution : Take great care not to damage the anode cap. Fig. 4 Fit your forefinger over the projection at the center of the cap and hold the cap between your thumb and middle finger.
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Page 7: Case Removal
Pull the anode cap slightly with the rubber cap turned over and visually check that the hook is engaged securely. Release your hand from the rubber cap of the anode cap. Caution : Cover the anode cap so that it does not lift. (10) Hold the skirt of the andoe cap slightly to improve the close contact between the cap and CRT. -
Page 8: Electrical Main Parts List
ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C105 87-016-637-080 CAP,E 10-50 SSL C106 87-018-134-080 CAPACITOR,TC-U 0.01-16 87-JBC-629-010 IC,M37272M8-131SP C107 87-A10-207-080 CAP,TCS 0.01-50KBUP050 87-A90-297-010 RCR UNIT,SBX1981-52 C203 87-018-134-080 CAPACITOR,TC-U 0.01-16 87-A20-612-010 IC,AT93C46-10PI C204 87-018-134-080 CAPACITOR,TC-U 0.01-16... - Page 9 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C606 87-A10-474-090 CAP,PP 0.01-1.25K J PHS L301 87-003-051-080 COIL,470UH C607 87-010-974-080 CAP,CER 220P-500 B L303 87-003-149-080 COIL,47UH C609 87-016-583-080 CAP,E 100-25 SSL L304 87-003-147-080 COIL, 22UH C610 87-016-594-090 CAP,E 1000-35 M SSL L305 87-003-295-080...
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Page 10: Transistor Illustration
REF. NO PART NO. KANRI DESCRIPTION L901 87-005-615-080 COIL,120UH J LAV35 !R904 87-A00-165-090 RES,M/F 15K-2W J RSF(S) !R905 87-A00-165-090 RES,M/F 15K-2W J RSF(S) !R906 87-A00-165-090 RES,M/F 15K-2W J RSF(S) R907 87-025-355-080 RES,M/F 100-1/6W F S901 84-LB3-610-010 SOCKET,CRT HPS1171 SFR901 87-024-519-080 SFR,470 DIA6 V NTP SFR902 87-024-519-080... -
Page 11: Ic Block Diagram
IC BLOCK DIAGRAM IC, LA7676D (V 1DEO BLACK CHR (MA) SHARP EXPAND COIN JUNGLE) VIDEO 1ST-BPA CONTRAST D.L. SYNC-SEP VIDEO LOCK SOFT 2ND-BPA CLAMP SYNC-SEP BRIGHT FM-DET KILLER COLOR-DEMO AFC-2 TINT -Y-OUT AFC-1 CARRIER-F PHASE FBP-DET SHIFTER OSD SWITCH RF-AGC (JUNGLE) DRIVER (VIDEO CHROMA) - Page 12 IC, TDA2007A INPUT+(2) OUT(2) – INPUT-(2) INPUT+(1) OUT(1) – INPUT-(1) IC, LA7953...
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Page 13: Block Diagram
BLOCK DIAGRAM... - Page 14 SCHEMATIC DIAGRAM-1 (MAIN C.B SECTION)
- Page 15 WIRING-1 (MAIN C.B SECTION)
- Page 16 WIRING-2 (N.K C.B SECTION) SCHEMATIC DIAGRAM-2 (N.K C.B SECTION)
- Page 17 WAVEFORM Input condition : Tuner 11ch (199.25MHz), 80dBµ input : P = Full Field CB & S = 1kHz (Mono) IC501 Pin 12 IC301 Pin 18 IC301 Pin 19 TRG +0 . 0 d i v NORM HOLDOFF MIN NORM 20 µs/div 1 V/div 20 µs/div...
- Page 18 Q901 Collector IC301 Pin 22 IC301 Pin 23 HOLDOFF MIN NORM HOLDOFF MIN NORM 20 µs/div 5 V/div 20 µs/div 20 µs/div 0.5 V/div 50 V/div 0.5V A=20µs A=20µs lO x lO x lO x IC301 Pin 20 Q902 Collector IC301 Pin 21 HOLDOFF MIN NORM...
- Page 19 IC1 Pin 17 HOLDOFF MIN NORM 20 µs/div 0.5 V/div 0.5V A=20µs lO x...
- Page 20 IC DESCRIPTION IC, M37272M8-113SP Pin No. Pin Name Description HSYNC OSD horizontal synchronised signal input terminal. "L"= active. VSYNC OSD vertical synchronised signal input terminal. "L"= active. Volume control output. (Volume PWM 8 bit.) CONT Contrast control output. (Contrast PWM 8 bit.) BRIGHT Brightness control output.
- Page 21 Pin No. Pin Name Description EEP CS EEP-ROM chip selection. Surround ON "H", OFF "L". Timing data bus between µ-P and tuner. ENABLE Used to mute line out sound and picture when no input signal is detected. AMUTE "H" to mute. MONO Compel the sound system to monaural.
- Page 22 ADJUSTMENT A MAIN C.B A MAIN C.B IC402 SFR501 V-SIZE SW501 V-POS SFR302 SUB-BRIGHT SFR301 H-POS SFR303 SUB-TINT L206 IC301 L203 L207 TOP: FOCUS VR TOP: FOCUS VR BOTTOM: SCREEN VR BOTTOM: SCREEN VR SFR201 RF AGC L201 TRAP T601 (FBT) RF AGC TU101...
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Page 23: Set-Up For Adjustment
SET-UP FOR ADJUSTMENT 1. CRT ADJUSTMENT Because the video signal output from a pattern generator is used as the adjustment signal input during adjustment, the video signal output from the pattern generator must conform with the specifications. 1-1. Precautions Measure the output waveform across 75 Ω load. Confirm that the (1) Receive the white raster signal, and then perform edging for synchronizing signal has an amplitude of about 0.3 V, the video signal at least 20 minutes. - Page 24 (3) Beam convergence adjustment (6-pole magnet) (2) Beam convergence adjustment (4-pole magnet) With a 4-pole magnet align the G beam with the already Align the R beam with the B beam. The G beam does not aligned R/B beam. move with this adjustment. (magenta) (magenta) (white)
- Page 25 1-3. Beam Landing Adjustment As there is occurrence of convergence distortion after completing the landing adjustments, be certain to carry out (1) Receive the green raster signal through the pattern generator. convergence adjustments. (2) Loosen the magnet lock screw, and shift the magnet assembly backward (toward the neck).
- Page 26 1-4. Beam Center Convergence Adjustment (1) Receive the dot pattern signal through the pattern generator. Make adjustments on the convergence with 4-pole and 6-pole magnets. (2) Pay attention to the center of the screen, and perform Operate each magnet in relation to the electron beam as shown in adjustments with two 4-pole magnets so that the R beam and Figs.
- Page 27 2. ELECTRICAL ADJUSTMENT 2-3. Sub-bright Adjustment (1) Receive a NTSC stairstep signal (color bar with chroma off). 2-1. White Balance Adjustment (NK C.B.) (2) Adjust SFR302 so the band next to the right end start to light. (1) Receive a NTSC raster signal (white). (See Figure 2-2) (2) Set the customer picture controls “bright”...
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Page 28: Straight Line
2-5. Horizontal Position Adjustment (Simple Adjustment Method) (1) Input the following signals. (1) Using LEADER LCG-404, input the cross hatch signal. Monoscope signal of the test tape TTV-06T (connect video) (2) As is shown in Fig. 2-4 (b), make adjustments with SFR501 (2) As is shown in Fig. -
Page 29: Tuner Adjustment
3. TUNER ADJUSTMENT 3-1. AGC Adjustment (3) Using a DC power supply, add DC3.0V ± DC0.2V of voltage (1) Receive a NTSC signal of RF INPUT under the following to the IC301 Pin10 (TP14). conditions. (4) Make adjustments with L203 so that the waveform’s center Input level: 58 dBµ... - Page 30 3-4. SIF Adjustment (1) Input the following signal conditions to the IC301 Pin48 (2) Adjust L201 so that center section (a section in the figure (TP1). below) of the ALIGNMENT SCOPE waveform becomes 60.25 MHz ± 50 kHz. (FM/SG) CARRIER 4.5MHz LEVEL 90dBµ...
- Page 31 1. How To Activate /Release Service Mode Precautions to replace EEPROM 1 Release the function of Auto Power OFF. <JIG remote control unit> When replacing the EEPROM (IC3, AT93C46-10PI), be Jig Remote Controller JIG remote control unit to operate the service mode should be It releases the function of Auto Power OFF when no input certain to follow the sequence appearing below to carry out used with the remote control unit for RC-6VT03 (86-LBR-951-...
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Page 32: Mechanical Exploded View
MECHANICAL EXPLODED VIEW 1/1 MECHANICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 87-054-086-010 BADGE,AIWA 52.5 16 86-LB4-002-110 CABI,REAR 2 8Z-JBW-001-010 PANEL,FR CN202 17 87-JBG-004-010 PLATE,JACK NH 3 86-LB4-006-010 LENS,LED 18 84-LB3-216-010 HLDR,LED... - Page 33 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 Printed in Singapore 727105...