
2008-03-14
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
65
22” TROUBLESHOOTING TABLE
Power unit operation check.
↓
LINE_FILTER_UNIT:
↓
YES
POWER_UNIT
↓
YES
↓
YES
↓
YES
Are the power cord and harness in the unit properly connected?
NO
Connect the power cord and harness properly, and turn on the
power.
Is F901 F902 normal?
NO
LINE_FILTER_UNIT:
Isn't C908, RV901, L902, C900, C901, etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Is BD901 (+320V) output?
Does the circuit operate normally?
Check circuit around (BD901, Q903, ZD906, IC901, D901 etc ).
NO
Is a voltage of +5.3V applied to pin (4,5) of connector (CN902)?
Does the switching circuit operate normally?
Check circuit around the primary side (T901, ZD906, D901,
D903, Q903, D904, IC901, Q901, D904 etc.), the secondary side
(D905, L904, C921 etc.), the DC_DET circuit (IC902, ZD903,
IC903, IC901, etc.), and the protection circuit.
NO
Is a voltage of +16V applied to pin (9,10) of connector (CN902)?
NO
Does the inverter circuit operate normally?
Check circuit around (D902, L903, C914, Q908, ZD902 etc.), and
the protection circuit.
Summary of Contents for LC-19LE320
Page 142: ...LC 19LE320 LC 22LE320 LC 26LE320 LC 32LE320 LC 37LE320 LC 42LE320 142 ...
Page 324: ...LC 19LE320 LC 22LE320 LC 26LE320 LC 32LE320 LC 37LE320 LC 42LE320 324 4 19 PACKING PARTS ...
Page 326: ...LC 19LE320 LC 22LE320 LC 26LE320 LC 32LE320 LC 37LE320 LC 42LE320 326 4 22 PACKING PARTS ...
Page 328: ...LC 19LE320 LC 22LE320 LC 26LE320 LC 32LE320 LC 37LE320 LC 42LE320 328 26 PACKING PARTS ...
Page 330: ...LC 19LE320 LC 22LE320 LC 26LE320 LC 32LE320 LC 37LE320 LC 42LE320 330 32 PACKING PARTS ...
Page 332: ...LC 19LE320 LC 22LE320 LC 26LE320 LC 32LE320 LC 37LE320 LC 42LE320 332 37 PACKING PARTS ...
Page 334: ...LC 19LE320 LC 22LE320 LC 26LE320 LC 32LE320 LC 37LE320 LC 42LE320 334 42 PACKING PARTS ...
Page 337: ... ...
Page 338: ... 01 2 2 2 3 3 2 4 156 78 4 4 156 78 4 4 4 2 2 9 2 2 2 2 2 2 9 2 2 2 2 53 2 2 2 2 2 2 2 2 2 2 ...
Page 339: ... 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...
Page 340: ... ...
Page 341: ... 01 2 2 2 3 3 2 4 156 78 4 4 156 78 4 4 4 2 2 2 9 2 2 2 2 2 2 ...
Page 342: ... 9 2 9 2 2 2 2 2 2 53 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...
Page 343: ... 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...
Page 344: ... 0 ...
Page 345: ... 0 0 123 4 0 4 0 4 0 5 6781 9 5 5 67 1 9 0 272 2 5 5 0 5 ...
Page 346: ... A ...
Page 347: ... 0 12 3 1 4 ...
Page 348: ... 5 6 78 9 ...
Page 349: ... 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 ...
Page 350: ... ...
Page 351: ... ...
Page 352: ... ...
Page 353: ... A A A ...
Page 354: ... 0 0 1 2 3 ...
Page 355: ... 4 0 5 6 6 78 9 6 ...
Page 356: ... 6 6 6 6 6 6 6 6 6 5 5 5 5 5 5 5 5 5 ...
Page 357: ... 6 6 6 6 6 6 6 6 6 6 6 6 ...
Page 358: ... 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 ...
Page 359: ... 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 ...
Page 360: ... 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 A A A ...
Page 361: ... 0 1 2 ...
Page 362: ... 3 4 5 6 6 78 9 6 ...
Page 363: ... 6 6 6 6 6 6 6 6 6 5 A B 5 B 5 A B 5 A B 5 A B 5 B 5 A B 5 A B 5 B ...
Page 364: ... 6 6 6 6 6 6 6 6 6 6 6 CC5A 6 ...
Page 365: ... 6 6 6 6 6 6 6 6 6 6 D 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 ...
Page 366: ... 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 ...
Page 367: ... 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 E E E ...