Handling Of Traverse Deck (Optical Pickup) - Panasonic SA-AK15 Servlce Manual

S A .AKl 5
: WARNING
This servlce information is designed for experiense repair technicians only and is not designed for use by the general public. lt does not contain
warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electr¡city
should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with
in th¡s service information by anyone else could result in serious iniury or death.
I Gontents
B E F O R E R E P A I R A N D A D J U S T M E N T . . . . . . . . . .
H A N D L I N G P R E C A U T I O N S F O R T R A V E R S E D E C K . . . . .
S A F E T Y P R E C A U T I O N S . .
P R O T E C T I O N C I R C U I T R Y
P R E C A U T I O N O F L A S E R D I O D E
ACCESSORIES
CONNECTIONS
FRONT PANEL CONTROLS
.....
SETTING THE TIME
LISTENING TO COMPACT DISCS (PROGRAM PLAY)
LjSTENTNG
TO COMPACT DTSCS (CD MANAGER FUNCTTON)
....
BEFORE RECORDTNG (DECK 2 ONLY) ... ..........
RECORDING FROM COMPACT DISCS
REMOTE CONTROL BUTTONS & FUNCTIONS
OPERATION CHECKS & MAIN COMPONENT REPLACEMENT.....
S E L F . D I A G N O S T I C D I S P L A Y F U N C T I O N
C D T E S T M O D E F U N C T I O N
I Before Repair and Adjustment
D i s c o n n e c t A C p o w e r , d i s c h a r g e b o t h P o w e r S u p p l y C a p a c i t o r s C 5 0 4 a n d C 5 0 5 t h r o u g h a 1 0 O , 5 W r e s i s t o r t o g r o u n d .
D O N O T S H O R T - C I R C U I T D I R E C T L Y ( w i t h a s c r e w d r i v e r b l a d e , f o r i n s t a n c e ) , a s t h i s m a y d e s t r o y s o l i d s t a t e d e v i c e s .
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
C u r r e n t c o n s u m p t i o n a t A C 1 2 0 V , 6 0 H z , i n N O S I G N A L m o d e s h o u l d b e - 4 5 0 m A .
I Handling Precaut¡ons For Traverse Deck
The laser diode in the traverse deck (optical pickup) may break down due to potential difference
caused by static electricity of clothes or human body.
So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
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. Handling of traverse deck (optical pickup)
1. Do not subject the traverse deck (optical pickup) to static electricity as it is
extremely sensitive to electrical shock.
2. To prevent the breakdown of the laser diode, an antistatic shorling pin is
insefied into the flexible board (FFC board).
When removing or connecting the short pin, finish the job in as short time
as possible.
3. Take care not to apply excessive stress to the flexible board (FFC board).
4. Do not turn the variable resistor (laser power adjustment). lt has already
been adjusted.
. Grounding for electrostat¡c breakdown prevention
1 . H u m a n b o d y g r o u n d i n g
Use the anti-static wrist strap to discharge the static electricity from your
Dooy.
2. Work table grounding
Put a conductive material (sheet) or steel sheet on thearea where the
traverse deck (optical pickup) is placed, and ground the sheet.
Caution :
The static electricity of your clothes will not be grounded
through the wrist strap. So, take care not to let your
clothes touch the traverse deck (optical pickup).
Caution when Replacing the Traverse Deck:
The traverse deck has a short po¡nt shorted with solder to protect the laser
diode against electrostatics breakdown. Be sure to remove the solder f rom
the short point before making connections.
P a g e
2 M E A S U R E M E N T S A N D A D J U S T M E N T S
T E R M I N A L F U N C T I O N O F l C ' s
W I R I N G C O N N E C T I O N D I A G R A M
B L O C K D I A G R A M
T E R M I N A L G U I D E O F l C ' s . T R A N S I S T O R S A N D D I O D E S . .
S C H E M A T I C D I A G R A M
P R I N T E D C I R C U I T B O A R D
T R O U B L E S H O O T I N G G U I D E
M E C H A N I S M P A R T S L O C A T I O N ( R A A 3 4 O 7 )
P a g e
1 9 - 2 0
2 1 - 2 3
2 4
2 5 - 3 1
3 2
3 2 - 4 5
q O -
J I
5 2
5 3 - 5 4
5 5
5 5
5 6
5 7 , 5 8
5 9 - 6 . t
6 2 - 6 5
6 6
o l
5 M E C H A N I S M P A R T S 1 I S T . . . . . . . . . . . .
6 L O A D I N G M E C H A N I S M P A R T S L I S T , . . . . . . . . . . .
7 C D L O A D I N G U N I T P A R T S L O C A T I O N
7 - 8
C A B I N E T P A R T S L O C A T I O N
9 R E P L A C E M E N T P A R T S L I S T . . . . . . . . . . . .
1 0 - 1 5 R E S T S T O R S & C A p A C T T O R S . . . . . . . . . . .
1 6 - 1 7 P A C K I N G M A T E R I A L S & A C C E S S O R I E S
. , , . . . . . . . . , , . . . . . . . . .
1 8 P A C K A G I N G , , ,
f:FC board
Lens (Do noi touch)
S h o r t p o i n l
Optical pickup
N o . @ ( G N D ) p i n N o . € ) ( L D ) p i n
Variable resislor
(Do not turn)
Wrist strap
-\--7
(Anti-:19!9 ilegqglll
lron plate or some metals to
conducl electr¡city
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