TOSHIBA 27A62
Instrukcja Serwisowa

ELECTRICAL ADJUSTMENTS
2-12: CONTRAST MAX MANUAL 1. Activate the adjustment mode display of Fig. 1-1 and press the channel button (18) on the remote control to select �CONT. MAX�. 2. Press the VOL. UP/DOWN button on the remote control until the contrast step No. becomes �118�. 3. Receive a broadcast and check if the picture is normal. 4. Press the TV/VIDEO button on the remote control to set to the AV mode. 5. Activate the adjustment mode display of Fig. 1-1 and press the channel button (18) on the remote control to select �CONT. MAX�. 6. Press the VOL. UP/DOWN button on the remote control until the contrast step No. becomes �100�. 7. Press the TV/VIDEO button on the remote control to set to the CS mode. 8. Activate the adjustment mode display of Fig. 1-1 and press the channel button (18) on the remote control to select �CONT. MAX�. 9. Press the VOL. UP/DOWN button on the remote control until the contrast step No. becomes �113�. 2-13: SEPARATION 1, 2 Please do the method (1) or method (2) adjustment. Method (1) 1. Set the multi-sound signal generator for each different Lch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz) and receive the RF. 2. Connect the oscilloscope to the Audio Out Jack. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (37) on the remote control to select �SEP 1�. 4. Press the VOL. UP/DOWN button on the remote control to adjust it until the audio output wave becomes a fine sine wave. 5. Press the CH UP button once the set to �SEP 2� mode. Then perform the above adjustment 4. Method (2) 1. Set the multi-sound signal generator L-ch=1KHz, R-ch =Non input and receive the RF. 2. Connect the oscilloscope to the Audio Out Jack (R-ch). 3. Press the AUDIO SELECT button on the remote control to set to the stereo mode. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (37) on the remote control to select �SEP 1�. 5. Press the VOL. UP/DOWN button on the remote control to adjust it until the R-ch output becomes minimum. 6. Set the multi-sound signal generator L-ch=Non input, R-ch=1KHz and receive the RF. 7. Connect the oscilloscope to the Audio Out Jack (L-ch). 8. Activate the adjustment mode display of Fig. 1-1 and press the channel button (38) on the remote control to select �SEP 2�. 9. Press the VOL. UP/DOWN button on the remote control to adjust it until the L-ch output becomes minimum. 00 OSD 50 mm 15 2-14: LEVEL 1. Receive the VHF HIGH (70dB). 2. Connect the AC voltmeter to pin 6 of CP101 and the pin 1 (GND) of CP101. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (36) on the remote control to select �LEVEL�. 4. Press the VOL. UP/DOWN button on the remote control until the AC voltmeter is 75 ± 2mV. 2-15: OSD HORIZONTAL 1. Receive the monoscope pattern. 2. Activate the adjustment mode display of Fig. 1-1. 3. Press the VOL. UP/DOWN button on the remote control until the value from the adjustment screen frame to the shadow mask becomes 50 ± 5mm. (Refer to Fig. 2-3) TV

Fig. 2-3

2-16: PIP HORIZONTAL POSITION 1. Receive the monoscope pattern on the PIP screen. 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (47) on the remote control to select "H. POSI". 4. Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum. 2-17: PIP VERTICAL POSITION U 1. Receive the monoscope pattern. 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (41) on the remote control to select "V. POS U". 4. Press the VOL. UP/DOWN button on the remote control until the value from the PIP screen frame to the shadow mask becomes 20(+5, -0)mm. (Refer to Fig. 2-4) Shadow mask 20mm

Fig. 2-4