Sharp XL-3000V service manual HF error, No sound, TEI Tezi, Rfi, Rfzi Rfrp

XL-3000V

• HF error.

Is output (tracking error signal) obtained at the pins 46 (TEI) and 47 (TEZI) of IC802 the CD TEST MODE "STEP 4" is changed to "STEP 5"?

Yes

test mode "step 4" test mode "step 5"

TEI

TEZI

No

Is output obtained at the pins 3 and 8 of CNP802/CNW3.

Yes

Check the periphery of IC801. Check the PWB pattern between pin 12 (TEO) of IC801 and pins 46 and 47 of IC802.

Is it normal ?

Yes

Optical pickup failure. No

IC801 is faulty.

No

Is output (HF signal) obtained at the pin 38 (RFI) of IC802 when the CD TEST MODE "STEP 4" is changed to "STEP 5"?

Yes

test mode "step 4" test mode "step 5"

RFI

Is output (HF signal) obtained at the pins 41 (RFZI) and 42 (RFRP) of IC802 when the CD TEST MODE "STEP 4" is changed to "STEP 5"?

Yes test mode "step 4" test mode "step 5"

RFZI

RFRP

	Check the PWB pattern between pin 49 (TRO) of IC802 and pin 19
	of IC804.
	Check the periphery of IC804 and CNP802/CNW3.
	If OK. Optical pickup failure.
	Is output obtained at the pins 4 and			Optical pickup failure.
No	5,6 of CNP802/CNW3.		No
		Yes
	Check the periphery of IC801.
	Check the PWB pattern between pin 19 (RFGO) of IC801 and pin
	38 (RFI) of IC802.
	If OK. IC801 is faulty
No	Check the periphery of IC801.
	Check the PWB pattern between pin17 (RFRP) of IC801 and pins
	41 (RFZI) and 42 (RFRP) of IC802.
	If OK. IC801 is faulty.

Is the following wave output to the pin 55 (DMO) of IC802 when the CD TEST MODE "STEP 4" or "STEP 5"?

Yes	test mode "step 4"	test mode "step 5"
DMO

Normal.

• No sound.

Is the wave output at pins 45~48 on IC14V?

Yes

Is the wave output at pins 1 and 7 on IC11V?

Yes

Is the wave output at pins 14 and 17 on IC401?

Yes

Check areas between pins 5 and 26 on IC401 and IC601.

No	Check the periphery pins 28~32 of IC802.
	If OK. IC802 failure.

Check the soldering and parts of IC14V. No

Check the soldering and parts of IC11V. No

Check the connection between IC11V and IC401.

No

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