DOWNLOAD Sharp XL-1500 (serv.man4) Service Manual ↓ Size: 98.23 KB | Pages: 9 in PDF or view online for FREE

Model
XL-1500 (serv.man4)
Pages
9
Size
98.23 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Troubleshooting and Function Tables
File
xl-1500-sm4.pdf
Date
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Sharp XL-1500 (serv.man4) Service Manual ▷ View online

– 37 –
XL-1500H
Make sure that the disc is normal, and set the CD TEST MODE (STEP 1).
Is the measured voltage as specified in circuit diagram?
Check the main unit power supply circuit.
No
Yes
No
Is "Er-CD01" displayed"?
Yes
Move the pickup to most internal circumference side of disc.
Turn the power off and reset the CD TEST MODE (STEP 1).
Is "PU ERROR " not displayed?
Yes
Check the PWB pattern between pin 65 (CD_RES) of IC701 and
pin 63 (RST) of IC801.
No
Is +5V applied to pin 63 (RST) of IC801?
Yes
Is CD Lid switch SW802
ON condition ?
No
Does the CD TEST MODE advance from "STEP 2"?
Yes
Check the between pattern IC701 and SW802 If OK.
Check the main unit power supply circuit.
No
Does the laser come on in CD TEST MODE "STEP 2"?
Check the procedure in "LASER FAILURE".
Yes
Does the CD TEST MODE advance from "STEP 3" to "STEP
4"?
Check the procedure in "FOCUS FAILURE".
Yes
Yes
Does the spindle motor rotate normally when the CD TEST
MODE changes from "STEP 4" to "STEP 3"?
Yes
Is the HF output on pin 24 of IC801 in CD TEST MODE "STEP 5"?
Check the procedure "HF ERROR".
Yes
No
No
No
No
Check the pattern between pin 58 (PU_IN) of IC701 and
CNW704/CNP704.
Check the between CNW704/CNP704 and PU-IN switch.
Set ON condition the CD
Lid switch.
Check the procedure in "SPINDLE MOTOR CLV SERVO
FAILURE".
No
Does the sled motor
move ?
No
Does the sound heard when the optical pickup move to the
selected play by the FF 
 /REW 
 key.
Check the procedure "NO SOUND"
No
Yes
Check the procedure in
"SLED MOTOR
OPERATING FAILURE ".
Does the LCD track number and time indicator work properly ?
Check the pattern between IC701 and LCD701.
Yes
No
Is "Er-CD01 "
displayed ?
No
Turn the power off and then back on.
Does the unit initialize properly and start playback when PLAY
key is pressed?
Check the pattern between pin 58 (PU_IN) of IC701
and CNW704/CNP704. Check the between CNW704/
CNP704 and PU-IN switch.
No
Yes
Check the procedure in
"HF ERROR".
Yes
Does the unit play in order in the FF mode?
Check the procedure in "TRACK SEARCH FAILUR".
Yes
Does playback continue for 30 seconds after the start of
playback ?
Check the procedure in "SLED SERVO FAILURE".
Yes
Normal
No
No
Yes
XL-1500H
– 38 –
Check the PWB pattern between emiter of Q605 and CNP805/
CNW805.
• Laser failure.
Is 0V applied to the pin 38 (SEL) of IC801 ?
Yes
No
Does the laser come on when pattern cut between pin 8 (SEL) of
IC802 and pin 38 (SEL) of IC801 ?
Check the PWB pattern between IC701 and IC801 (BUCK/CCE/
BUS0~3)
Yes
Yes
No
Check the peripheral parts of IC802 and Q801. If it is normal, the
optical pickup is faulty.
No
Check CNP801/CNW801. If it is normal, the optical pickup is
faulty.
Is approx. 2V applied to the collector of Q801.
• Focus failure.
Does the optical pickup move up and down when the disc is
removed?
Is the following waveform ouput at the pin 29 (FEI) of IC801
when the disc is set?
Is the waveform shown above input at the pin 30 (SBAD) of
IC801?
Yes
Yes
No
No
The optical pickup is faulty.
Check as stated in item "FOCUS SERVO SAWTOOTH WAVE
FAILURE".
Yes
Check the periphery of IC802 and CNP801/CNW801. Is it normal?
No
Check the pattern between pin 12 of IC802 and pin 30 of IC801.
Check the periphery of IC802 and CNP801/CNW801.
IC802 is faulty.
Yes
Is +7.2V applied to the pin 1 of CNW805 ?
Is +5V applied to the cathode side of ZD801 ?
Yes
No
No
Check the peripheral parts of ZD801,C802 and C821.
Is +5V applied to the pin 64 (VDD) of IC801 ?
Is +3.3V applied to the pin 1 (VCC) of IC802 ?
Yes
No
No
Check the PWB pattern between cathode side of ZD801 and pin
64 of IC801.
Check the PWB pattern between collector of Q802 and pin 1 of
IC802.
pin 29
(FEI)
pin 33
(FOO)
pin 30
(SBAD)
Yes
Yes
– 39 –
XL-1500H
• Focus servo sawtooth wave failure.
Is +7.0V applied to the pins 21 and 22 (VCC) of IC803 ?
 
Is sawtooh wave output to the pin 33 (FOO) of IC801 ?
IC801 is faulty.
No
Yes
Yes
Is sawtooth wave obtained between pins 17 and 18 of IC803 ?
No
No
Check the PWB pattern
between pin 7 of IC803
and pin 66 (CD STB) of
IC701.
Is +5V applied to the pin 7
(MUTE) of IC803 ?
Check the PWB pattern between pin 33 (FOO) of IC801 and pins
19 and 20 of IC803.  If OK.  IC803 is faulty.
Check the PWB pattern between pin emiter of Q605 and IC803.
No
Is sawtooth wave obtained between pins 13 and 16 of
CNP801/CNW801 ?  (as shown above)
Yes
Check the PWB pattern between CNP801/CNW801 and IC803.
No
CNP801/CNW801 connection failure or optical pickup failure.
Yes
• Spindle motor clv servo  failure.
Is above wave obtained between pins 1 and 2 of IC803 ?
Is following wave output to the pin 41 (DMO) of IC801 when
the CD TEST MODE "STEP 3" is changed to " STEP 4" ?
No
Yes
Check the procedure in "HF ERROR".
If OK.  IC801 is faulty.
Check the PWB pattern between pin 41 (DMO) of IC801 and pins
9 and 10 of IC803.  If OK.  IC803 is faulty.
No
Is above wave obtained between pins 9 and 12 of CNP801/
CNW801 ?
Yes
Check the PWB pattern between CNP801/CNW801 and IC803.
No
CNP801/CNW801 connection failure or optical pickup failure.
Yes
DMO
Yes
1.5~2.5sec
1.5~2.5sec
XL-1500H
– 40 –
• HF error.
Yes
Yes
Is output (tracking error signal) obtained at the pins 31 (TEI)
and 32 (TEZI) of IC801 the CD TEST MODE "STEP 4" is
changed to "STEP 5"?
Is output (HF signal) obtained at the pin 24 (RFI) of IC801
when the CD TEST MODE "STEP 4" is changed to "STEP 5"?
Is output (HF signal) obtained at the pins 27 (RFZI) and 28
(RFRP) of IC801 when the CD TEST MODE "STEP 4" is
changed to "STEP 5"?
No
No
• No sound.
No sound from both L and R-ch?
Yes
Is +3.3V applied to pin 51 (DVDD) of IC801?
No
Check the PWB pattern between pin 34 (TRO) of IC801 and pin 25
of IC803.
Check the periphery of IC803 and CNP801/CNW801.
If OK.  Optical pickup failure.
Check the periphery of IC802.
Check the PWB pattern between pin17 (RFRP) of IC802 and pins
27 (RFZI) and 28 (RFRP) of IC801.
If OK.  IC802 is faulty.
No
Yes
Normal.
Check the interval between the pins 50 or 53 of IC801 and the pins
2 or 5 of IC101.
No
Check the PWB pattern between pin 51 of IC801 and Q808.
Yes
Is signal of pins 50 and 53 of IC801 output?
No
Check the peripheral parts of IC801. If OK, IC801 is faulty.
Yes
The main PWB is faulty.
Check the periphery of IC802.
Check the PWB pattern between
pin 11 (TEO) of IC802 and pins 31
and 32 of IC801.
Is it normal ?
Is output obtained at the pins 3 and
8 of CNP801/CNW801.
Optical pickup failure.
IC802 is faulty.
Check the periphery of IC802.
Check the PWB pattern between pin 19 (RFGO) of IC802 and pins
24 (RFI) of IC801.
If OK.  IC802 is faulty
Is output obtained at the pins 4 and
5,6 of CNP801/CNW801.
Optical pickup failure.
Is the following wave output to the pin 41 (DMO) of IC801
when the CD TEST MODE "STEP 4" or  "STEP 5"?
Check the periphery pins 15~19 of IC801.
If OK.  IC801 failure.
No
No
No
Yes
Yes
No
Yes
Yes
test mode "step 4"
test mode "step 5"
TEI
TEZI
test mode "step 4"
test mode "step 5"
RFI
test mode "step 4"
test mode "step 5"
RFZI
RFRP
test mode "step 4"
test mode "step 5"
DMO
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  • DOWNLOAD Sharp XL-1500 (serv.man4) Service Manual ↓ Size: 98.23 KB | Pages: 9 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp XL-1500 (serv.man4) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp XL-1500 (serv.man4) System. Information contained in Sharp XL-1500 (serv.man4) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.

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