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I was searching a way to modify the original phono-in entry (for connection of vynil disc player, with RIAA equalization) to a line-in entry (for connection of modern analog entries, eg. ipod, mp3player).
This service manual gave me the correct hints.
It contains very useful infos for repairing and modifing the hi-fi, such as disassembling instructions, block diagrams, schematic diagrams, PCB prints, replacement parts list.
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Mechanical Instructions 4.3
Rear Cover Warning: Disconnect the mains power cord before you remove the rear cover. 1. Remove the screws, which secure the rear cover. The screws are located at the top, bottom, left and right sides; next to the Side/IO connections and SCART connection. There are also three deeper located screws next to the stands. 2. Lift the rear cover from the cabinet. Make sure that wires and flat foils are not damaged during cover removal.
1. Remove the middle fixation screw (1) from the bottom side of the connector plate (as this holds the SSB bracket). Note: Sometimes it is easier to loosen the complete connector plate and remove it together with the SSB. 2. Remove all connector fixation screws (2) from the front side of the connector plate. 3. Remove the two female screw locks (3) of the VGA connector. 4. Release the plastic cable clips (4) on the shielding and disconnect all cables from the SSB. Note: Be careful with the fragile LVDS connector on the SSB. 5. Now, completely remove the SSB (together with all the shieldings) from the set. 6. Once the SSB is out, remove the fixation screws (5) from the shielding. 7. Remove the shielding, it hinges at the left side (acc. photo). 8. Remove the fixation screws that hold the panel, and take out the panel. Notes: â¢ Pay special attention to the EMC foam on the SSB shielding. These must be replaced in their initial positions â¢ during set re-assembly. Insulate the tuner pins, so they cannot touch the shielding (see also figure âSDM Service jumperâ in Chapter 5).
Side I/O Panel 1. Disconnect the cable from the panel. 2. To replace the complete bracket, remove the two fixation screws on either side of the panel. 3. Release the two fixation clamps and lift the panel out of the bracket.
LED + Switch Panel 1. Remove the two fixation screws. 2. Disconnect the cable from the rear of the panel.
LCD Supply Panel 1. Disconnect all cables from the panel. 2. Remove the fixation screws from the panel.
Top Control Panel 1. Remove the two fixation screws. 2. Release the two fixation clamps and lift the panel out of the bracket.
LCD Stand-by/Audio Panel 1. Disconnect all cables from the panel. 2. Remove the fixation screws from the panel.
Small Signal Board (SSB) 4.3.8
2 4 4 4 3
Figure 4-4 SSB Connector plate
Figure 4-6 LCD panel disassembly 1. Remove the T10 screws (1) from the mounting frame. 2. Remove all mounting LCD panel T20 screws (2). 3. Important: Unplug the LVDS connector (3) at the LCD panel. Be careful, as this is a very fragile connector! 4. Unplug the following connectors (4). â LCD back light (disconnect at the LCD side) â Loudspeaker (easiest to disconnect at the speaker and to release the cable holders a little. â Top Control cable (disconnect at SSB side). â Cable between LED/Switch panel and SSB. 5. Lift the metal frame (together with all PWBs) from the LCD panel. 6. After removal of the frame, you can lift the LCD display from the set.
Figure 4-5 Cover shield of the SSB