XL-T300 (serv.man11). Test mode - Sharp Audio Service Manual (repair manual)

xl-t300 (serv.man11) service manual
Model
XL-T300 (serv.man11)
Pages
7
Size
64.91 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Test mode
File
xl-t300-sm11.pdf
Date

Read Sharp XL-T300 (serv.man11) Service Manual online

– 13 –
XL-T300H
2. CD Test Mode (TEST 01)
In the CD test mode the operation of each step is possible even if the LID-SW is off.  If focus cannot be taken in step 3 or any error
is processed, it is impossible to proceed to the next step.  During error processing, end the test mode by pressing the ON/STAND-
BY button or return to the step 1 by pressing the CD STOP button.  Any other operations are inhibited.
1. Step 1 Mode
When the CD test mode is obtained, the following display lights up.  Then CD initialization operation flow proceeds up to CD
STB off to wait for the following buttons to be pressed.
One second after display lights up
Press the following buttons in this state to obtain the operations specified below.
"ON/STAND-BY" ...... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................. After the pickup returns to the innermost periphery, it slides toward the outer periphery while this button
is pressed.
"REW/REV" .............. After the pickup returns to the innermost periphery, it slides toward the inner periphery while this button
is pressed.  If PICKUP IN is on, input is invalid.
"PLAY" ..................... Shift to step 2
"STOP" ..................... Invalid
"FUNCTION" ............ Shift to step 5
*  In case of initialization, the pickup is moved toward the inner periphery. Any buttons other than "ON/STAND-BY" button are
not accepted until the shift of pickup to the inner periphery is completed at this time. If PICKUP IN SW ON cannot be detected
within 10 seconds, the slide motor stops, and the following error display appears.  Press the ON/STAND-BY button to end
the test mode, or press the CD STOP button to return to step 1.  Any other operations are inhibited.
TEST MODE
The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement,
the aging test mode, and the self-diagnosis test mode for self-judgment in case of final product inspection.
1.  Turning on the test mode
For obtaining each test mode, press the ON/STAND-BY button, while keeping pressing the following two buttons in the ordinary
stand-by mode (power off ).  In this case, the main unit buttons are valid.  When turning the ON/STAND-BY on with remote control
buttons, test modes are not obtained.
[Ordinary test mode]
1. CD Test Mode (TEST 01) ........................................ VOLUME DOWN + STOP
2. Tuner Test Mode (TEST 02) .................................... VOLUME DOWN + MEMORY
3. Electronic Volume Test Mode (TEST 03) ................ VOLUME DOWN + REC
4. Timer Test Mode (TEST 04) .................................... VOLUME UP + STOP
5. LCD Test Mode (TEST 05) ...................................... VOLUME UP + REC
6. Electric CD Lid Aging Test Mode (TEST 08) ........... VOLUME UP + MEMORY
[Self-diagnosis Test Mode]
1.  Button input diagnosis test mode (TEST06).…....VOLUME UP  + PLAY
Processes are different depending on destinations at initial settings.
XL-T300H
– 14 –
The time display always indicates "0:00".
Press the following buttons in this state to obtain the operations specified below.
"ON/STAND-BY" ..... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................ The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" ............. The pickup slides toward the inner periphery while this button is pressed.  If PICKUP IN is on, input is
invalid.
"PLAY" ..................... Shift to step 5
"STOP" .................... Return to step 1
"FUNCTION" ........... Shift to step 5
*If the focus is not received, the process returns to step 1.
4. Step 4 Mode
The CLV servo ON command (8600) is transmitted to wait for the following buttons to be pressed. (The disc is rotated for CLV
lock.)
Press the following buttons in this state to obtain the operations specified below.
"ON/STAND-BY" ..... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................ The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" ............. The pickup slides toward the inner periphery while this button is pressed.  If PICKUP IN is on, input is
invalid.
"PLAY" ..................... If focus has been taken, shift to step 4 is executed. If not, acceptance is inhibited.
"STOP" .................... Return to step 1
"FUNCTION" ........... Shift to step 5
*If the focus is not received after it has been taken, the process returns to step 1.
3. Step 3 Mode
While the laser keeps lighting, CD initialization operation flow proceeds up to 'CLV servo ON' to wait for the following buttons
to be pressed.(Focus servo turned on for focus search)
The focus search is repeated to take focus.
Press the following buttons in this state to obtain the operations specified below.
"ON/STAND-BY" ..... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................ The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" ............. The pickup slides toward the inner periphery while this button is pressed.  If PICKUP IN is on, input is
invalid.
"PLAY" ..................... Shift to step 3
"STOP" .................... Return to step 1
"FUNCTION" ........... Shift to step 5
2. Step 2 Mode
Press the "CD PLAY" button in this mode to transmit the laser lighting command LDON (8400) and turn on the laser.  Any other
operations are not performed in this case.
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XL-T300H
Press the following buttons in this state to obtain the operations specified below.
"ON/STAND-BY" ...... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................. The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............. The pickup slides toward the inner periphery while this button is pressed.  If PICKUP IN is on, input is
invalid.
"PLAY" ..................... Invalid
"STOP" ..................... Return to step 1
"FUNCTION" ........... Shift to step 6
"MEMORY" .............. Shift to step 7
*If the is not received, the process returns to step 1.
Other cautions
• TOC IL is not available for this test mode.
5. Step 5 Mode
When the CD initialization operation flow is completed, the mute is turned off, and playback is started.  Even if playback
reaches the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback passage time
as in case of ordinary CD playback.
Press the following buttons in this state to obtain the operations specified below.
"ON/STAND-BY" ...... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................. The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............. The pickup slides toward the inner periphery while this button is pressed.  If PICKUP IN is on, input is
invalid.
"PLAY" ..................... Invalid
"STOP" ..................... Return to step 1
"FUNCTION" ........... Shift to step 5
"MEMORY" .............. Shift to step 7
Press FF/PRESET UP or REW/PRESET DOWN button to slide the pickup. The number of errors accumulated up to that time
is cleared and addition is restarted after shift.
*If the focus is not received, the process returns to step 1.
6. Step 6 Mode
Press the FUNCTION button during step 5 operation to set EC/FC bit to "H" by PROSET command (9188 transmission) and
to monitor BUS2 (QDRE) during idle mode.  The number of errors for 1 frame (1 sub-code block in IC data) is read by read
command SRC6 during "H".  The number of errors accumulated in 750 frames for 10 seconds is displayed on LCD.  During
the display, music signal is played back.
XL-T300H
– 16 –
Press the following buttons in this state to obtain the operations specified below.
"ON/STAND-BY" ...... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................. The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............. The pickup slides toward the inner periphery while this button is pressed.  If PICKUP IN is on, input is
invalid.
"PLAY" ..................... Invalid
"STOP" ..................... Return to step 1
"FUNCTION" ........... Shift to step 6
"MEMORY" .............. Shift to step 5
*If the focus is not received, the process returns to step 1.
7. Step 7 Mode
Press "MEMORY" key during step 6 operation to display automatically adjusted values on LCD in the order as below.  Item
names are displayed by left alignment, and adjusted values by right alignment in hexadecimal numbers.  Operations other
than display are as same as those for step 5.
a) "Fb" is displayed on the left of LCD.  FTBAST command (D480) is transmitted to designate focus balance adjusting
register.  Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds,
operation is shifted to (b).
b) "FG" is displayed on the left of LCD.  FTBAST command (D481) is transmitted to designate focus gain adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  The upper two bits, which are invalid,
are displayed as "00".  After waiting two seconds, operation is shifted to (c).
c) "Tb" is displayed on the left of LCD.  FTBAST command (D482) is transmitted to designate tracking balance adjusting
register.  Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds,
operation is shifted to (d).
d) "TG" is displayed on the left of LCD.  FTBAST command (D483) is transmitted to designate tracking gain adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  The upper two bits, which are invalid,
are displayed as "00".  After waiting 2 seconds, operation is shifted to (e).
e) "FO" is displayed on the left of LCD.  FTBAST command (D484) is transmitted to designate focus offset adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds, operation
is shifted to (f).
f) "TO" is displayed on the left of LCD.  FTBAST command (D485) is transmitted to designate tracking offset adjusting
register.  Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds,
operation is shifted to (g).
g) "FF" is displayed on the left of LCD.  FTBAST command (D486) is transmitted to designate RF amplitude adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds, operation
is shifted to (a).
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Here you can read online and download Sharp XL-T300 (serv.man11) Service Manual in PDF. XL-T300 (serv.man11) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp XL-T300 (serv.man11) System. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.