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7. CLOCK part
A c lo ck is n e ed e d fo r th e m a in b o ard o f the IN T E R N E T S E T T O P B O X .
M C L K (6 5 M H z) an d V C L K (2 5 .18 M H z) a re su p p lie d to th e A R M 7 5 0 0,
an d X O U T (1 4.3 1 8 M H z) is su p p lie d to C H 7 0 01 A .
T h e c lo ck d ou b lin g ch ip , C H 9 2 9 4, co n n ec te d to crysta l ta kes th e ro le .
8. SOUND OUTPUT part
S O U N D O U T P U T is su pp lied fro m th e A R M 75 0 0 in d ig ita l a n d a n a lo gu e typ es .
A na lo g u e s ig na ls , R an d L , a re su p p lie d to the e xte rn a l am p lifie r th ro u g h
C S 4 3 33 S O U N D E N C O D E R u sin g th e d ig ital ty pe ste re o so un d da ta a nd th e cloc k.
9. POW ER part
D C 5 V is a p p lie d to th e m a in p a rt fro m th e p ow e r m od u le thro ug h C O N N A S b y op e ra tin g S M P S .
T h e p o w e r L E D is turn ed O N /O F F b y re ce ivin g sig n a ls fro m th e p o w er m o d ule.
D e ta ile d de sc rip tio n s ho u ld b e a d de d .
10. M ODEM part
D a ta n e e d s to b e a d d e d b y th e ve n d o r.
P ictu re o f th e exte rn a l a p pe a ra n ce a nd th e w irin g d ia gra m
M a in p a rts a nd P IN lo ca tio n
If th e te le p h o ne fu nc tion d o es n o t op e ra te
If IN T E R N E T co n ne ctio n d oe s n o t o p e ra te
If th e w ireles s ke yb oa rd /re m o te co n tro l d o(e s) n o t o p e ra te
If th e P C in p ut p ictu re is flo w ing ve rtically.
If th e w ired ke yb o a rd /re m o te co ntrol d o (e s) n o t o pe ra te
If th e po w er LE D ha s o n -a n d -o ff fa ilu re
Summary of Contents for DSN-300A
Page 5: ...4 3 BLOCK DIAGRAM...
Page 37: ...36 10 EXPLODED VIEW 10 1 DSN 300A...
Page 39: ...38 10 2 MODEL DSN 300S...
Page 42: ...41 11 SCHEMATIC DIAGRAM...
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