Sony HCD-EC68P Service Manual - Page 19

HCD-EC68P/EC78P [CD SERVO TEST MODE] This mode can check the servo system operations of the optical pick-up system (= optical unit + CD board). Note1: Do not enter the [CD SERVO TEST MODE] while any other test mode is in progress. Note2: Do not enter any other test mode while the [CD SERVO TEST MODE] is in progress. How to Enter the CD Servo Test Mode Procedure: 1. Press the [I/1] button to turn the power on. 2. Press the [FUNCTION] button to select CD function. 3. Press three buttons of [CD N], [l m - TUNING] and [DISPLAY] simultaneously. 4. It enters the CD servo test mode and displays "BDT S CU". How to Exit from the CD Servo Test Mode Procedure: 1. Press three buttons of [CD N], [l m - TUNING] and [DISPLAY] simultaneously. 2. It releases from the CD Servo Test Mode and returns to the ordinary CD function. Key Operation Use these keys to move between the five modes contained in the CD Servo Test Mode, that are the S-Curve Mode, the RAM Read Mode, the RAM Write Mode, the Command Out Mode and the Error Rate Mode as described below. Also, use these keys to move between the menus within the respective five modes. When [ +] is pressed, the screen advances to the next menu or to the next mode. When [ -] is pressed, the screen returns back to the previous menu or to the previous mode. Use these keys also to increase or decrease the numeric value when changing the numeric value. Pressing [ +] increases the value and pressing [ -] decreases the value. [DSGX] , [EQ]: Use these keys to move between the different layers of the hierarchy of the CD Servo Test Mode shown below. Press [DSGX] to move down to the lower layer, and press [EQ] to move up to the higher layer. [TUNING + M L], [l m - TUNING]: Use these keys to move the cursor to the right digit or to the left digit in the six-digit number, when changing the numeric value. Press [TUNING + M L] to move the cursor to the right, and press [l m - TUNING] to return the cursor to the left. [FUNCTION]: Use this key to execute Command Out in the Command Out Mode. CD Servo Test Mode Tree: Higher layer S Curve Mode LD ON (BDT S CU) (LD ON) RAM Read Mode Disc Type (BDTRAM R) (DISCTYPE) Gain Index (GAININDX) RFO GAIN (RFO_GAIN) FEO GAIN (FEO_GAIN) SBAD GAIN (SBAD_GAI) TEO GAIN (TEO_GAIN) Disc Size (DISCSIZE) RAM Write Mode (BDTRAM W) Command Out Mode (BDT COMO) Error Rate Mode (BDT ERR) Op ABRAKE Error (OPABRKER) SBBT Data (SBBT DAT) FEOOCD (FEOOCD) SPG Mask (00 SPG) Fix RF Gain (00 FIX) TMAX ON (00 TMA) Driver Mute OFF (00 D_M) COMOUT6X (COMOUT6X) READ2X (READ2X) REG READ (REG_READ) FEBC? (FEBC?) FGADD? (FGADD?) TEBC? (TEBC?) TGADD? (TGADD?) RFGC? (RFGC?) FEOF? (FEOF?) TEOF? (TEOF?) TEIOCD1? (TEIOCD1?) TEIOCD2? (TEIOCD2?) TEIOCD3? (TEIOCD3?) TEOOCD? (TEOOCD?) FEOOCD? (FEOOCD?) MONITOR (MONITOR) Lower layer of menu hierarchy value indication (AL: 0000, RW: 0001) value indication (0001) value indication (0009) value indication (0005) value indication (0007) value indication (000A) value indication (0000: Non disc, 0001: 8cm, 0002: 12cm) value indication (0000) value indication (006C) value indication (0440) value edit (Non mask:00, Mask:01) value edit (Non Fix:00, AL Fix:01, RW Fix:02) value edit value edit (Normal:00, Forced OFF:01) value edit command out (000000) (OK) value edit command out (60) (50) value edit command out (00) (0000) command out (00) command out (10) command out (00) command out (00) command out (00) command out (FFC0) command out (FFC0) command out (FE80) command out (FF40) command out (FFC0) command out (FD00) command out (F780) value edit command out (570A00) (OK) Error rate indication (00000000) 19