Limstensgatan 7 | SE-21616 Limhamn | Sweden | +46 40 6548800 | primare.net CD22 & CD32 Transport Modification Service Document Last updated 2016-19-12 Contents 1. General information 2. Modifying the CD Loader 3. Improving Readability 4. Insulating the Spindle Motor 1. General information Some CD22 & CD32 units have trouble reading discs. The display will show ERROR or loader will make noise at startup. This service document details the four steps required to repair your CD22/CD32: - Replacing the magnet (loader) - Replacing the springs with new rubber pads (loader) - Improving readability (decoder board modification), firmware update, and factory reset - Insulating the spindle motor Note: before proceeding, make sure the cable between decoder board and laser is in good operating order.
CD22 & CD32 Transport Modification Service Document Last updated 2016-19-12
Contents 1. General information 2. Modifying the CD Loader 3. Improving Readability 4. Insulating the Spindle Motor 1. General information Some CD22 & CD32 units have trouble reading discs. The display will show ERROR or loader will make noise at startup. This service document details the four steps required to repair your CD22/CD32: - Replacing the magnet (loader) - Replacing the springs with new rubber pads (loader) - Improving readability (decoder board modification), firmware update, and factory reset - Insulating the spindle motor Note: before proceeding, make sure the cable between decoder board and laser is in good operating order.
2. Modifying the CD Loader 2.1 Remove the AC cord from the CD22/CD32 2.2 Remove the top cover by removing the 10 torx screws 2.3 Disconnect the 3 cables from CD loader and disassemble it from the player 2.4 Remove the tray
New magnet and rubber pads Disassembled CD loader without tray
2.6 Lift out the traverse mechanism from the loader. If the stands marked in blue has a height of 1.7mm, please continue to step 2.8 without changing the rubber pads. If the stands marked in blue has a height of 2.5mm, please continue and remove the 4 existing rubber pads (red marking)
2.10 Remove the existing magnet and install the new magnet. Make sure that the white stripes on magnet are facing down, against the black plastic plate (magnet holder)
2.13 Install the traverse mechanism in to the loader and fasten with the 4 screws
2.14 Cut or trim down any sharp or extended component leads in order to make them blunt. This is to avoid the leads touching the chassis bottom insulation
3. Improving Readability Improving readability is done in three steps: - Replacing three resistors on the decoder board - Updating firmware - Performing a factory reset 3.1 Remove the AC power cord from the CD player 3.2 Remove the top cover (by removing the 10 torx screws) 3.3 Remove resistors JP100, JP101 and R133 from the decoder board (see picture below):
3.4 Replace those resistors with the following values: JP100 = 3,3kΩ 0603 JP101 = 1,5kΩ 0603 R133 = 8,2kΩ 0603 3.5 Updating CD-Player Firmware (see “How to Update CD32 & CD22 MCU Firmware”) 3.6 Performing a ‘FACTORY RESET’: - Turn ON the CD player and wait until the display shows “No disc” - Press and hold 'standby', 'play' and 'stop' buttons on the front panel. “FACTORY” will start blinking in the display. When “FACTORY” stops blinking, you can release the buttons 3.7 You can check the firmware version by pressing and holding the ‘standby’ button
4. Insulating the Spindle Motor When opening the tray, the spindle motor drops to allow for the insertion of a CD. Due to the new heavier and bigger spindle motor, contact with the chassis bottom might happen if the insulation is not sufficient (or missing). A short could occur if the motor were to contact the chassis bottom, which could damage the servo IC on the decoder board. As a result, fuses might blow and ERROR will be shown in the display. 4.1 Remove the AC power chord from the CD player 4.2 Remove the top cover (by removing the 10 torx screws) 4.3 Disconnect all cables between the decoder board and the CD loader 4.4 Remove the CD loader 4.5 Install insulation in area marked with red in picture below (servo IC marked in blue)
4.6 Assemble the CD loader, reconnect the cables and put on the top cover before turning the CD player ON again 4.7 If the insulation is too thick, the spindle may not be able to drop deep enough and CD tray will touch the spindle assembly when closing. Check that the tray can eject and close smoothly without touching the spindle assembly Note: Make sure to check point 2.14 in this document. Extended leads can penetrate thin insulation!
