Error Code Display And Servo Adjustment Function; Error Code Display Procedure; Servo Adjustment Procedure - Technics SL-HD301 Service Manual

SL-HD301 / SL-HD501
6 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-HD301/501). It also has a
servo adjustment function for displaying the status of servo
system functions (focus, tracking, CLV) on the tuner's FL
display.The system control {C and FL display are part of the
tuner so make sure the system has been connected properly
before using these functions. (This unit can be operated
6.1. Error code display procedure
Turn the power ON.
Press the INPUT SELECTOR button, select CD.
| Load the test disc (SZZP1054C).
Hold down the Mf button for at least 2 seconds, and then
press the >>/>>I button for at least 2 seconds while
continuing to hold down the @ button.
And let go of the I button while continuing to hold down the
p>/>>| button.
6.2. Servo adjustment procedure
Turn the power ON.
Press the INPUT SELECTOR button, select CD.
Load the test disc (SZZP1054C).
Hold down the ™ button for at least 2 seconds, and then
press the>>/>>I button for at least 2 seconds while continuing
to hold down the Mi button.
And fet go of the button while continuing to hold down the
b>/PP! button.
Press the > button, play for at least 10 seconds.
Servo adjustment results are displayed.
Focus Tracki
paar ng CLV servo
i
wn mon of
: un TL) : on na "H" level
7-H +b Se ee eo ee ee
5 ' : "OF
2 ant a 808 Baan gan L" level
independently, although the error code display and servo
adjustment functions cannot be used.)Use these two functions
for guidance during fault diagnosis and repair.
Note:
Check beforehand for scratching or soiling of the test disc
(SZZP1054C), and soiling or other problems with the optical
pickup lens.
A servo section error code is displayed. (See Table 2.)
Use this error code display as a guideline for finding the
malfunction point in the servo circuitry. If the error code "E-00"
is displayed, the unit is "OK (No problem)."
A mechanism OK/NG error code is displayed. (See Table 1.)
This error code can be used to diagnose whether or not the
mechanism is OK. If there are multiple errors, these can be
displayed successively by pressing the >>/»i button.
Remove the disc and turn the power OFF. (The error code
display mode is canceled.)
Remove the disc and turn the power OFF.
(Example)
a is te
Focus Focus system
normal
Tracking
Normal
"H" level
Focus system
defective
Tracking system Tracking system
normal defective
CLV servo system CLV servo system
defective normal