User manual BUSH CTV 3409

[. . . ] The adjustments should be carried out in the following order for convenience. SMPS SYSTEM VOLTAGE 1) Set the BCS (Brightness, Contrast, Saturation) and VOL (Volume) to minimum. 2) Check the voltage at the shorted pins of socket PL602 (TP1) 3) If necessary, adjust VR801 112 ± 0. 5VDC (14" and 15 models) 4) Set the BCS and VOL to normal picture and sound VISION DEMODULATOR AND AFC 1) Set the pattern generator for 10mV, 38. 9 MHz (B/G models) or 39. 5 MHz (for I models) or 38. 0 MHz (for 0/K models) RF output 2) Connect the RF output of the pattern generator to any one input of SAW filter and connect the other input of SAW filter to ground through 10 nF capacitor (No antenna input applied) 3) Check the voltage at the base of 0201 (TP2) 4) Adjust VL401 for 3. 5 ± 0. 1 Voc 2) PICTURE GEOMETRY AND FOCUS 1) Set the pattern generator for centre-cross, circle and cross-hatch composite pattern. [. . . ] VR703 VERTICAL FOLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V, R711 HORIZONTAL LINEARITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L601, C606 HORIZONTAL SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C603, SYSTEM VOLTAGE (112V) HORIZONTAL FOLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SYSTEM VOLTAGE (112V) FLUE PICTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TR602, G3 (FOCUS), EHT, FLAMENT VOLTAGE DARK PICTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TR602 G2 (FOCUS), BRIGNES, CONTRAST VOLTAGE NOISY PICTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IC401 INTERFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TUNER (TU201) NO SOUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (PIN5), IC301 LOW SOUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IC401 (PIN5, SOUND CONTROL VOLTAGE), R303, IC301 SOUND DISTORTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R303, IC301. , 26V POP NOISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q301, C307 CONTRAST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IC401 (PIN25) BRIGHTNESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Dominant features of controller are control of optional teletext, outputs for OSD, IR control signal receiving, and internal EEPROM. The controller has IIC communication port at #40 , #41 and OSD driver (R, G, B, FBI) at # 22, # 23, # 24, # 25. PWM control outputs are tuning # 34; vertical linearity adjustment # 1; AGC adjustment # 2. [. . . ]