Haier LET39Z18HF, Руководство по обслуживанию

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1-3-6 Saf ety Check af ter Rep a ir m ent
- 04 -
S ervice M a nu a l
Model No.:
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in the ori g in a l positions, or w hether there a re the positions w hich a re deterior a ted a round
the serviced pl a ces serviced or not. Check the insul a tion bet w een the a ntenn a ter m in a l or
extern a l m et a l a nd the A C cord plu g bl a des. A nd be sure the s af ety o f th a t.
Gener a l S ervicin g Prec a utions
1. A l wa ys unplu g the receiver A C po w er cord f ro m the A C po w er source be f ore;
a . Re m ovin g or reinst a llin g a ny co m ponent, circuit bo a rd m odule or a ny other receiver
a sse m bly.
b. Disconnectin g or reconnectin g a ny receiver electric a l plu g or other electric a l
connection.
c. Connectin
g a test substitute in p a r a llel w ith a n electrolytic c a p a citor in the receiver.
CAUTION: A w ron g p a rt substitution or incorrect pol a rity inst a ll a tion o f electrolytic
c a p a citors ma y result in a n explosion h aza rd.
2 . Test hi g h volt ag e only by m e a surin g it w ith a n a ppropri a te hi g h volt ag e m eter or other
volt ag e m e a surin g device (DVM, FETVOM, etc) equipped w ith a suit a ble hi g h volt ag e
probe.
Do not test hi g h volt ag e by "dr aw in g a n a rc".
5. Do not de f e a t a ny plu g /socket B+ volt ag e interlocks w ith w hich receivers covered by this
service ma nu a l m i g ht be equipped.
8VHZLWKWKLVUHFHLYHURQO\WKHWHVW¿[WXUHVVSHFL¿HGLQWKLVVHUYLFHPDQXDO
CAUTION:
'RQRWFRQQHFWWKHWHVW¿[WXUHJURXQGVWUDSWRDQ\KHDWVLQNLQWKLVUHF
eiver.
3. Do not spr a y che m ic a ls on or ne a r this receiver or a ny o f its a sse m blies.
4. Unless speci f ied other w ise in this service ma nu a l, cle a n electric a l cont a cts only by
a pplyin g the f ollo w in g m ixture to the cont a cts w ith a pipe cle a ner, cotton-tipped stick or
co m p a r a ble non- a br a sive a pplic a tor; 10% (by volu m e) A cetone a nd 90% (by volu m e)
isopropyl a lcohol (90%-99% stren g th).
CAUTION: 7KLVLVDÀDPPDEOHPL[WXUH
8QOHVVVSHFL¿HGRWKHUZLVHLQWKLVVHUYLFHPDQXDOOXEULFDWLRQRIFRQWDFWVLVQRWUHTXLUHG
C a p a citors ma y result in a n explosion h aza rd.
6. Do not a pply A C po w er to this instru m ent a nd/or a ny o f its electric a l a sse m blies unless
a ll solid-st a te device he a t sinks a re correctly inst a lled.
7 . A l wa ys connect the test receiver g round le a d to the receiver ch a ssis g round be f ore
connectin g the test receiver positive le a d.
A l wa ys re m ove the test receiver g round le a d l a st. C a p a citors ma y result in a n explosion
h aza rd.
9. Re m ove the a ntenn a ter m in a l on TV a nd turn on the TV.
10. Insul a tion resist a nce bet w een the cord plu g ter m in a ls a nd the etern a l exposure m et a l
should be m ore th a n Moh m by usin g the 500V insul a tion resist a nce m eter.
11. I f the insul a tion resist a nce is less th a n M oh m , the inspection rep a ir should be required.
I f you h a ve not the 500V insul a tion resist a nce m eter, use a Tester. Extern a l exposure
m et a l: A ntenn a ter m in a l He a dphone ja ck