User manual SONY MD-MX4

[. . . ] For details on how to view error codes for the customer, refer to the following box in the instruction manual. For details on how to check error codes during servicing, refer to the following "Procedure for using the Self-Diagnosis Function (Error History Display Mode)". PROCEDURE FOR USING THE SELF-DIAGNOSIS FUNCTION (ERROR HISTORY DISPLAY MODE) Note: Perform the self-diagnosis function in the "error history display mode" in the test mode. The following describes the least required procedure. Be careful not to enter other modes by mistake. [. . . ] Observe the waveform of the oscilloscope, and check that the ± specified value is satisfied. Do not turn the [ AMS ] knob. (Traverse Waveform) A VC B Specified value : Below 10% offset value Offset value (%) = IA ­ BI X 100 2 (A + B) 11. Press the [YES] button display "EF MO CHECK" The disc stops rotating automatically. Press the [ EJECT] button and remove the disc. Turn the [ AMS ] knob and display "EF CD CHECK" (C04). Press the [YES] button and display "EFB = CD". Observe the waveform of the oscilloscope, and check that the ± specified value is satisfied. Do not turn the [ AMS ] knob. (Traverse Waveform) A VC B Specified value : Below 10% offset value Offset value (%) = IA ­ BI X 100 2 (A + B) 6-4. Focus Bias Check Change the focus bias and check the focus tolerance amount. Turn the [ AMS ] knob and display "CPLAY MODE" (C30). Press the [YES] button twice and display "CPLAY MID". Self-Recording/playback Check Prepare a continuous recording disc using the unit to be repaired and check the error rate. Insert a recordable disc (blank disc) into the unit. Turn the [ AMS ] knob to display "CREC MODE" (C31). Press the [YES] button to display the "CREC MID". When recording starts, " REC " is displayed, this becomes "CREC About 1 minute later, press the [MENU/NO] button to stop continuous recording. Turn the [ AMS ] knob to display "CPLAY MODE" (C30). Press the [YES] button to display "CPLAY MID". "C = AD = " will be displayed. Check that the C1 error becomes below 80 and the AD error below 2. Press the [MENU/NO] button to stop playback, and press the [ EJECT] button and take out the disc. [. . . ] C774 C775 C776 C781 C782 C783 C787 C790 C798 Part No. 1-162-294-31 1-162-294-31 1-162-294-31 1-162-294-31 1-164-159-11 1-162-294-31 1-164-159-11 1-124-261-00 1-124-261-00 Description CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC ELECT ELECT < CONNECTOR > CN750 CN771 1-695-994-11 HOUSING, CONNECTOR 5P 1-778-317-11 CONNECTOR, BOARD TO BOARD 13P < FLUORESCENT INDICATOR TUBE > FL781 1-517-738-11 INDICATOR TUBE, FLUORESCENT R791 R792 0. 001uF 0. 001uF 0. 001uF 0. 001uF 0. 1uF 0. 001uF 0. 1uF 10uF 10uF 10% 10% 10% 10% Remark 50V 50V 50V 50V 50V 50V 50V 50V 50V C791 C792 C800 Ref. Description 1-673-242-11 HP BOARD ********* < CAPACITOR > 1-162-282-31 CERAMIC 1-162-282-31 CERAMIC 1-164-159-11 CERAMIC HP KEY SW Remark 10% 20% 20% 100PF 100PF 0. 1uF 10% 10% 50V 50V 50V < CONNECTOR/JACK > CN791 J791 1-506-468-11 PIN, CONNECTOR 3P 1-770-306-11 JACK (LARGE TYPE) (PHONES) < RESISTOR > 1-249-393-11 CARBON 1-249-393-11 CARBON 10 10 5% 5% 1/4W 1/4W < VARIABLE RESISTOR > < IC > IC761 IC771 8-749-013-92 IC GP1UC7X (g) 8-759-525-49 IC MSM9201-02GS-K < LEAD > LP787 1-690-880-41 LEAD (WITH CONNECTOR) < TRANSISTOR > Q781 Q782 8-729-620-05 TRANSISTOR 8-729-620-05 TRANSISTOR < RESISTOR > < CONNECTOR > R722 R723 R724 R725 R726 R732 R761 R762 R772 R773 R774 R775 R776 R781 R782 R783 R784 1-249-421-11 1-247-843-11 1-249-425-11 1-249-429-11 1-249-435-11 1-249-421-11 1-249-401-11 1-247-807-31 1-247-843-11 1-247-807-31 1-247-807-31 1-247-807-31 1-247-807-31 1-247-807-31 1-249-441-11 CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON 2. 2K 3. 3K 4. 7K 10K 33K 2. 2K 47 100 3. 3K 100 100 100 100 100 100K 100 100K 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W CN701 CN770 1-779-556-11 CONNECTOR, FFC(LIF(NON-ZIF))19P 1-778-318-11 CONNECTOR, BOARD TO BOARD 13P < LEAD > LP748 1-690-880-41 LEAD (WITH CONNECTOR) < RESISTOR > R702 R703 R704 R705 R706 R712 R713 R714 R742 R743 R744 R745 1-249-421-11 1-247-843-11 1-249-425-11 1-249-429-11 1-249-435-11 1-249-421-11 1-247-843-11 1-249-425-11 1-249-426-11 1-249-425-11 CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON 2. 2K 3. 3K 4. 7K 10K 33K 2. 2K 3. 3K 4. 7K 5. 6K 4. 7K 10K 33K 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 2SC2603-EF 2SC2603-EF C700 C748 C799 RV791 1-225-590-11 RES, VAR 1K (PHONES LEVEL) ************************************************************** A-4419-240-A KEY SW BOARD, COMPLETE (AEP, UK) A-4419-245-A KEY SW BOARD, COMPLETE (SP) A-4419-250-A KEY SW BOARD, COMPLETE (US, CND) *********************** < CAPACITOR > 1-126-153-11 ELECT 1-164-159-11 CERAMIC 1-124-261-00 ELECT 22uF 0. 1uF 10uF 20% 20% 6. 3V 50V 50V 1-247-807-31 CARBON 1-249-441-11 CARBON < SWITCH > S721 S722 S723 S724 S725 1-762-875-21 1-762-875-21 1-762-875-21 1-762-875-21 1-762-875-21 SWITCH, KEYBOARD (§ EJECT) SWITCH, KEYBOARD (PLAY MODE) SWITCH, KEYBOARD (REPEAT) SWITCH, KEYBOARD (SCROLL) SWITCH, KEYBOARD (LEVEL/DISPLAY/CHAR) 1-249-429-11 CARBON 1-249-435-11 CARBON < SWITCH > S731 1-762-875-21 SWITCH, KEYBOARD (TIME) S732 1-762-875-21 SWITCH, KEYBOARD (FADER) ************************************************************** S701 S702 S703 S704 S705 1-762-875-21 1-762-875-21 1-762-875-21 1-762-875-21 1-762-875-21 SWITCH, KEYBOARD (REC r) SWITCH, KEYBOARD (p) SWITCH, KEYBOARD ()) SWITCH, KEYBOARD (0) SWITCH, KEYBOARD (P) ­ 71 ­ KEY SW Ref. S706 S711 S712 S713 S714 Part No. MAIN Description Remark Ref. [. . . ]