7. Error Code Display and Servo Adjustment Function
This unit has an error code display function, so that if the unit operates
incorrectly, the fault is displayed using an error code on the FL display of the
Tuner (ST-HD550). It also has a servo adjustment function for displaying the
status of servosystem functions (Focus, Tracking, CLV servo) on the FL display
of the tuner. The system control IC and FL display are part of the tuner so make
sure the system has been connected properly before using these functions. Use
these two functions for guidanceduring fault diagnosis and repair.
Note:
Check beforehand for scratching or soiling of the test disc (SZZP1054C), and
soiling or other problems with the pickup lens.
7.1. Error code display procedure
Table 7-1.
display Symptom Cause
H15
When CD tray opens, it closes by itself. Disc tray open detect switch (S790) fault.
H16
When CD tray closes, it opens by itself. Disc tray close detect switch (S791) fault.
F15
Does not play, even when
button is pressed.
Pickup rest detect switch (S701) fault.
F26
Does not move, even when
button is pressed.
System control IC and servo processor IC
(IC201, IC702) fault.
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