Sony HCD-ESX6 / HCD-ESX8 / HCD-ESX9 Service Manual ▷ View online
HCD-ESX6/ESX8/ESX9
21
Optical Block Diagnosis Flow (1/2)
Does Optical pickup move to inner circumference?
(Visual check)
Yes
Yes
No
JL510: 1.2V
Check voltage supply to MTK IC501
JL302/CL585: 3.3V
Checks CN831 SL+/SL- signal (JL839/JL838).
Does it output the signal?
Does Spindle motor rotate?
(Visual check)
Yes
Does Optical pickup do focus search?
(Visual check)
No
Check condition of transistor Q211, V
E
§9
C
§9
&KHFN,&IRU9
If there is no problem, check circumference circuit of IC2000
IRU9
&KHFN,&/'2,&IRU9
Yes
A
No
No
No
No
No
Checks circumference circuit for SL+/SL- of IC851.
Checks circumference circuit of IC501 FMO Signal.
Yes
Yes
Yes
REMOVE T
O
P
PANEL
REMOVE S
ID
E
PANEL
REMOVE CDM TOP P
ANEL
TURN ON
TRA
Y IN
The Sled motor has a problem.
Replaces BU.
Checks CN831 SP+/SP- signal (JL834/JL835).
Does it output the signal?
The Spindle motor has a problem.
Replaces BU.
Checks circumference circuit for SP+/SP of IC851.
Checks circumference circuit of IC501 DMO Signal.
Checks CN801 FCS+/FCS- signal (JL823/JL824).
Does it output the signal?
The Optical pickup has a problem.
Replaces BU.
Checks circumference circuit for FCS+/FCS- of IC851
.
Checks circumference circuit of IC501 FOO Signal.
HCD-ESX6/ESX8/ESX9
22
Optical Block Diagnosis Flow (2/2)
Does laser diode become luminous ?
(Visual check)
Is output level of RF signal (CN507 6pin) up to standard?
RF Level = 1.0 ±0.25 Vpp
Test CD:YEDS-18
Is there no problem with Long term Aging Test (60min)?
Confirms that there is no sound skip.
END
No
No
Check JL802 (LD650) signal.
Does it output 2.2V when laser become luminous ?
Check JL806 (LD780) signal.
Does it output 1.8V when laser become luminous ?
Checks circumference circuit of Q881 or Q891.
Checks circumference circuit of IC501 LDO1 and LDO2.
The Optical pickup has a problems.
Replaces BU.
DISC IN
No
A
Is output level of RF signal(CN507 6pin) up to standard?
RF Level = 1.0 ±0.25 Vpp
Test CD:YEDS-18
Replaces BU if it is not up to standard.
No
No
If it is not up to standard,
Lens cleaning is performed.
The Optical pickup has a problems.
Replaces BU.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
HCD-ESX6/ESX8/ESX9
23
POWER ON
No
Check that power voltage 3.3V of MB BOARD CN300 6PIN (SD). Is there power voltage decrease when power on time?
Check that the voltage 12V/12.5V of MB BOARD. Make sure L1700 is 12V.
Check that SD slow signal.
ESX6/ESX8/ESX9 Check that power voltage 3.3V of CN300 3PIN.
Check that there is no “PROTECT” on LCD display. Check that power on is available if the unit is ESX6/ESX8/ESX9
A
Yes
Yes
No
No
Check that DC voltage between speaker terminal Plus and speaker terminal Minus.
䐟
MB BOARD TB1700 for ESX6/ESX8/ESX9
Between 1PIN-2PIN Between 3PIN-4PIN
䐠㻌
MB BOARD TB1702 for ESX9 only.
Between 1PIN-2PIN Between 3PIN-4PIN
D-AMP
Mount Diagnosis Flow (1/2)
HCD-ESX6/ESX8/ESX9
24
D-AMP
Mount Diagnosis Flow (2/2)
PLAY MUSIC
END
No
No
A
Yes
Yes
Yes
Is signal output from speakers terminal?
Check that power voltage of MB BOARD CN1700 13PIN, PIN1-5 (V1)
ESX8/ESX9 50V ± 2.5V ESX6 36V ± 1.8V
Check that power voltage 12V/12.5V of MB BOARD.
Yes
Yes
Check that RESET power voltage 3.3V at MB BOARD CN300 7PIN.
Check that AMP IC OUT waveform at MB BOARD ESX6/ESX8: JL1716 and JL1724,
JL1717 and JL1727
ESX9:
䐟㻌
JL1716 and JL1724,
Are they swing?
JL1717 and JL1727
䐠㻌
JL1718 and JL1721, JL1742 and JL1745
Check that SMPS block power supply operation. Refer to the Troubleshooting Power Block.
No
No
ESX6/ESX8/ESX9 Check that MB BOARD C1886 voltage and peripheral circuit.
Check that PANEL BOARD IC001 (SYSTEM CONTROL) 38PIN (O-AMP-RST). Normal condition is 3.3V.
No
ESX6/ESX8 Replace AMP IC (IC1705)
ESX9 Replace AMP IC (IC1705) for
䐟
Replace AMP IC (IC1706) for
䐠
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