User manual SHARP 28LW-92E

[. . . ] AK - 45 CHASSIS SERVICE MANUAL SE00AK45CHA00 Issued: 20th Jan. 2004 PAL B/G, I / SECAM L/L', B/G, D/K SYSTEM COLOUR TELEVISION CHASSIS AK-45 In the interests of user safety (required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used. CONTENTS TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CIRCUIT DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] To start production mode alignments enter the MAIN MENU and then press the digits 4, 7, 2 and 5 respectively or press MUTE and INFO buttons at the same time. The following first menu appears on the screen. SERVICE ADJUST. . . AK45JA0XX AK45JA0XX You can select Adjust or Options items by pressing Up/Down buttons. In order to enter the selected parameter, press Left or Right button. To exit the service menu press MENU button. Entire service menu parameters of AK45 CHASSIS are listed below. 14. 2. ADJUST MENU Select the parameter by pressing up/down buttons. Adjust the parameter by pressing Left/Right buttons. In ADJUST menu, changed values are stored automatically. ADJUST. . . 000 001 002 003 004 005 006 007 008 009 255 036 019 020 030 026 003 004 005 005 White Point Red, White Point Green, White Point Blue: Not used. AGC Apply PAL BG signal, VHF-3 Channel-12 and 60dBµV signal level. Adjust AGC (Automatic Gain Control) item by pressing Left/Right buttons till the voltage at AGC point (pin1 of the tuner) becomes 3. 0 volts. Y-Delay Enter a PAL B/G colour and black-white bar test pattern via RF. Adjust Y-Delay for PAL till the colour transients on the colour bar of the pattern become as sharper and colours between transients do not mix with each other as possible. 23 AK - 45 CHASSIS Y-Delay SECAM Enter a SECAM B/G colour and black-white bar test pattern via RF. Adjust Y-Delay SECAM till the colour transients on the colour bar of the pattern become as sharper and colours between transients do not mix with each other as possible. Y-Delay NTSC Enter an NTSC colour and black-white bar test pattern via RF. Adjust Y-Delay NTSC till the colour transients on the colour bar of the pattern become as sharper and colours between transients do not mix with each other as possible. Vertical Position Offset This value is fixed (127) Vertical Position Offset This value is fixed (127) Horizontal Position Offset This value is fixed (127) Horizontal Position Offset This value is fixed (127) Vertical Blank Start This register will be used only at 4:3 tubes for 16:9 mode adjustment. It adjusts the vertical blank start position. Vertical Blank Stop This register will be used only at 4:3 tubes for 16:9 mode adjustment. It adjusts the vertical blank stop position. Angle Change Angle by pressing Left/Right buttons till the vertical lines of the crosshatch pattern become completely perpendicular to horizontal lines without any angle of vertical deviation. [. . . ] Scart Output Prescaler b7 b6 b5 b4 b3 b2 b1 b0 Scart Output Prescaler 01111111 45 AK - 45 CHASSIS Option 55. Speaker Setup Speaker Setup (L/R, L/C/R, L/R/S, L/C/R/S) b7 b6 b5 b4 b3 b2 b1 b0 00000000 Option 56. Audio Options Available Or Not Attention: All bits on the Option 56 must be the "0" for MONO TV SETS B7: B6: B5: B4: B3: B2: B1: B0: Nicam ASD VRS CRM . . . LBE Spa Avl = = = = = = = = note 7 note 6 note 5 note 4 x note 2 note 1 note 0 Note 7: Nicam = 0 = 1 = Note 6: ASD = 0 = 1 = Note 5: VRS = 0 = 1 = Note 4: CRM = 0 = 1 = Note 2: LBE = 0 = 1 = Note 1: Spa = 0 = 1 = Note 0: Avl = 0 = 1 = Nicam available Nicam not available Nicam available Auto Sound Detection available/not available Auto Sound Detection not available Auto Sound Detection available Virtual Surround VRS not available VRS available CARRIER MUTE OFF/ON Sound carrier mute is ON in the Stereo Sound IC Sound carrier mute is OFF in the Stereo Sound IC (i. e. [. . . ]