Sony HCD-NEZ30 Service Manual - Page 12

HCD-NEZ30 Ver. 1.5 SECTION 4 TEST MODE COLD RESET The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer. Procedure: 1. Press the I/1 button to turn the power on. 2. While pressing the x button, press the I/1 button and turn the [VOLUME] knob in the counter-clock wise. 3. The message "RESET" is displayed and the set is reset. PANEL TEST All segments of liquid crystal display are tested, and the version and released date of the micro computer are displayed. Procedure: 1. Press the I/1 button to turn the power on. 2. While pressing the [DSGX] button, press the l m button and turn the [VOLUME] knob in the counter-clock wise. Then all segments of liquid crystal display are turned on. 3. Press the [DSGX] button, the version and released date of the micro computer are displayed. example of display: 1104 V104 Version of micro computer (In this case, version 104) released date of micro computer (In this case, released of November 4) 4. Press the [TUNER/BAND] button, the model name and distination are displayed. example of display: 6NE NA CD ERROR HISTORY When this mode is entered, optical pick-up error code is displayed with the 8-character format on the fluorescent indicator tube. Procedure: 1. Set the FUNCTION to CD. 2. While pressing the [DSGX] button, press the CD u button and turn the [VOLUME] knob in the counter-clock wise. 3. CD error history is displayed on the liquid crystal display. The first digit from the left indicates: The first digit from the left indicates which mode the error history is. In the optical pick-up error code mode, "D" is displayed on the liquid crystal display. The second digit from the left indicates: (Error history No. display) The second digit from the left indicates which order the error history is. "1" indicates the latest error history, and each time the number increases by one, the error history goes back to one-previous error. The third and 4th digit from the left indicates: (Error status display) The third and 4th digit from the left indicates which error status is indicated. Display 01 02 03 04 05 06 07 Status Not focused (TOC read without a disc) GFS NG (TOC read with a disc chucked) Start operation time-over Defocused continuously (Defocused during TOC reading) Q code not entered for specified time Tracking not turned ON Blank disc (Blank disc TOC read) distination (In this case, North American model) model name (In this case, HCD-NEZXX) 5. Press the [PLAY MODE/TUNING MODE] button, "KEY 0 0" is displayed on the liquid crystal display, and key test mode in. Each time a key is pressed, the numerical value corresponding to each key is displayed on the liquid crystal display. 6. To exit from this mode, perform the "COLD RESET". TUNER STEP CHANGE-OVER (Except UK and East European models) Either the 9 kHz step or 10 kHz step can be selected for the AM channel step. Procedure: 1. Set the FUNCTION to AM, and press the I/1 button to turn the power off. 2. While depressing the [TUNER/BAND] button, press the I/1 button. 3. The message "9K STEP" or "10K STEP" is displayed on the liquid crystal display, and thus the channel step is changed over. The 5th and 6th digit from the left indicates: (Error step display) The 5th and 6th digit from the left indicates which processing when a trouble occurred Display 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E Contents Power OFF in progress Power ON in progress Initialize in progress Oscillation stopping From oscillation stop, oscillation starting Stopping Stop operation is under way Start operation in progress TOC read in progress Search operation is under way Playback operation is under way Pause operation is under way Playback manual search operation is under way Pause manual search operation is under way The 7th and 8th digit from the left indicates: The 7th and 8th digit from the left indicates which operation in progress when a trouble occurred. (Step of each processing of the 5th and 6th digits is indicated) 12