Orion PRO4400 free download

File name Orion_ch_PRO4400.PDF

CHASSIS Pro 4400 BUSH 3463NTX 3472NTX WS6667 WS7667 WST66 ORION 3850 TV2844W TV4400NTX DECCA / TATUNG GRUNDIG T70-1020 WF82-3020 MATSUI 28N03 32WN03 D28N440 D28W440 D28W441 T21N421 T25N440 T28N440 T32W440 T32W441S and many others Chassis Pro 4400 General Information Used in Bush, Goodmans, Grundig, Matsui, Orion, Tatung, etc 4. Control bytes (Cox) These are control registers that must be set as follows: Co4 Co3 Co2 00 27 96 Waveforms 5. Option bytes (Opx) The correct values to set for each appliance are given on the label on the back cover alongside the notations Op3, Op2 and Op1. Service Adjustments Power supply Use potentiometer PP1 to adjust the HT for 151V ± 0.5V for 16:9 tubes at the TSP28 terminals. Activating service mode 1. Switch on the appliance whilst holding down the MENU key at the cabinet controls until the red LED lights up. 2. Release the MENU button at the cabinet and press the standby key on the remote control. The appliance will default to programme 1, or to AV1 if pin 8 of SCART 1 is connected to a voltage of ±12V. It is therefore important to make certain that the test signal needed to make the adjustments is available either on programme 1, or on the SCART 1 input, as selection of the sources is not possible thereafter in service mode. 3. The functions that can be adjusted (listed below) are selected using the P+ and P-- keys on the remote control and the adjustments then made with the Volume ± keys. It is advisable to make a note of initial values before making any changes so that they can be restored if necessary. In the event of replacing the NVM memory or the microprocessor, it is essential to make all the adjustments accessible in service mode, since the replacement memory is supplied without any prior programming and a new microprocessor requires initialization. 1. IF video setting (IFxx AFCxx) This adjustment requires special equipment and will be needed only for the ICC2 N1 version, which is also recognisable by the presence of the LC7 coil. If the coil is present, adjust IF and AFC to the values given on the label affixed to the left side of the main PCB so that a suitable approximation is achieved. If the coil is not present, adjust as follows: IF AFC 50 3 6. Audio/stereo A2 decoder (LA/SA) The LA and SA functions allow adjustment of the separation between the right and left audio channels, and of the respective levels. An RF stereo generator is therefore required. Disconnect modulation to the left hand channel and adjust LA to give 1.4Vp-p at pin 1 of the SCART 1 connector. Then adjust SA for the minimum residual signal at pin 3 of SCART 1. If a stereo generator is not available, set LA to 01 and SA to 0B to obtain a fair approximation. 7. Setting the luminance/chrominance delay (Yx) The delay must be adjusted to the following values: Vp Vs Vn Yo 18 30 20 22 (PAL) (SECAM) (NTSC) (SCART) (UK VERSIONS) 2. Initialization (INIT CTV 831 x (VERSION) The initialization procedure, which also indicates the sof