1-9-1
E2G71TR
TROUBLESHOOTING
NOTE: BOARD MEANS PRINTED CIRCUIT BOARD.
FLOW CHART NO.1
The power cannot be turned on.
Is the fuse normal?
Is normal state restored when once unplugged
power cord is plugged again after several seconds.
Is the AL+5V(1) line voltage normal?
Check each rectifying circuit of secondary circuit
and replace P5(BOARD POWER SUPPLY) if
defective.
See FLOW CHART No.2 <The fuse blows out.>
Check for lead or short-circuiting of primary
circuit component and replace P5(BOARD
POWER SUPPLY) if defective.
(Q2101, Q2102, T2001, D2001, D2002, D2003,
D2004, R2101, R2102, R2103, R2104, R2105)
Yes
Yes
Yes
No
No
No
FLOW CHART NO.2
The fuse blows out.
After servicing, replace the fuse (F2001).
Check the presence that the primary component
is leaking or shorted and replace P5(BOARD
POWER SUPPLY) if defective.
Check the presence that the rectifying diode or circuit
is shorted in each rectifying circuit of secondary side
and replace P1(AV ASSEMBLY), P5(BOARD POWER
SUPPLY) if defective.
FLOW CHART NO.3
When the output voltage fluctuates.
No
Yes
Does the secondary side photo coupler circuit
operate normally?
Check the circuit and replace P5(BOARD
POWER SUPPLY) if defective.
(IC2101, D2111, D2112, D2113)
Check the circuit and replace P5(BOARD
POWER SUPPLY) if defective.
(IC2101, IC2201, D2212, D2238, D2240)
FLOW CHART NO.4
When buzz sound can be heard in the vicinity of power circuit.
Check if there is short circuit on the rectifying diode and the circuit in each rectifying circuit of secondary side and
replace P1(AV ASSEMBLY), P5(BOARD POWER SUPPLY) if defective. (D2201, D2202, D2203, D2204, D2205,
D2206, D2207, D2208, D2209, D2231, D2232, D2233, IC1025, IC1151, IC1152, Q1015, Q1154, Q1155, Q1156,
Q1159, Q1160, Q1163, Q1508, Q2203)
No
Yes
FLOW CHART NO.5
-FL is not outputted.
Is the supply voltage of -30V fed to the anode of
D2201?
Check D2201 and their periphery, and replace
P5(BOARD POWER SUPPLY) if defective.
Check for load circuit short-circuiting or leak, and
replace P1(AV ASSEMBLY), P5(BOARD POWER
SUPPLY) if defective.
Summary of Contents for RD-XS27KE
Page 42: ...1 12 4 AV 2 5 Schematic Diagram E2G71SCAV2 NOTE BOARD MEANS PRINTED CIRCUIT BOARD ...
Page 43: ...1 12 5 E2G71SCAV3 AV 3 5 Schematic Diagram NOTE BOARD MEANS PRINTED CIRCUIT BOARD ...
Page 44: ...1 12 6 E2G71SCAV4 AV 4 5 Schematic Diagram NOTE BOARD MEANS PRINTED CIRCUIT BOARD ...
Page 45: ...1 12 7 E2G71SCAV5 AV 5 5 Schematic Diagram NOTE BOARD MEANS PRINTED CIRCUIT BOARD ...
Page 53: ...1 12 15 DVD HDD MAIN 6 6 Schematic Diagram E2G71SCD6 NOTE BOARD MEANS PRINTED CIRCUIT BOARD ...
Page 54: ...1 12 16 NOTE BOARD MEANS PRINTED CIRCUIT BOARD BOARD AV Top View BE2J70F01013A ...
Page 64: ...1 15 3 R4NTI Push close 0 08 V 0 02 s Push Close detection Threshold level ...
Page 74: ......
