Sony MZ-R900 Service Manual - Page 13

MZ-R900 Configuration of Test Mode [Test Mode $Display Check Mode%] Press the > or [VOL +] key [Manual Mode] Press the x key [Servo Adjustment] [Audio Adjustment] [Power Supply Adjustment] [OP Alignment Adjustment] Press the . or [VOL --] key [Overall Adjustment Mode] Press the x key [Electrical Offset Adjustment] Power Supply Adjustment Auto Item Feed CD Overall Adjustment/ MO Overall Adjustment Press the [JOG LEVER $L% R] (up) key, or [DISPLAY] key on the remote commander [Self-Diagnosis Result Display Mode] Press the x key Press the N or [REC] key [Sound Skip Check Result Display Mode] Press the x key Press the [T MARK] key, or [DISPLAY] key on the remote commander for several seconds (about 3 seconds) [Key Check Mode] The key check quits, or open the upper panel Manual Mode Mode to adjust or check the operation of the set by function. Normally, the adjustment in this mode is not executed. However, the Manual mode is used to clear the memory, power supply adjustment, and laser power check before performing automatic adjustments in the Overall Adjustment mode. • Transition method in Manual Mode 1. Setting the test mode (see page 12). 2. Press the > or[VOL+] key activates the manual mode where the LCD display as shown below. Remote commander LCD display 000 M a n u a l [VOL +] key:100th place of item number [Major item switching] increase. [VOL --] key:100th place of item number N key x key decrease. [VOL +] key:10th place of item number [Medium item switching] increase. [VOL --] key:10th place of item number N key x key decrease. [Minor item switching] N key: Unit place of item number increase. . key: Unit place of item number decrease. [Adjusted value variation] [VOL +] key:Increases the adjusted value [VOL --] key:Decreases the adjusted value [Adjusted value write] X key: When adjusted value is changed: Adjusted value is written. When adjusted value is not changed: That item is adjusted automatically. 3. During each test, the optical pick-up moves outward or inward while the > or . key is pressed for several seconds respectively. 4. Each test item is assigned with a 3-digit item number; 100th place is a major item, 10th place is a medium item, and unit place is a minor item. The values adjusted in the test mode are written to the nonvolatile memory (for the items where adjustment was made). 13