Technics SLXP 330 Servive Manual

Page 2

SL-XP330

ICONTENTS

LOCATION AND FUNCTION OF CONTROL
PRECAUTION OF LASER DIODE.
ACCESSORIES
POWER SOURC
CONNECTIONS ..
HANDLING PRECAUTIONS FOR TRAVERSE DECK
DISASSEMBLY INSTRUCTIONS
NOTES FOR ASSEMBLY........
HOW TO CHECK THE MAIN P.C.B. (COMPONENT SID
HOW TO CHECK THE MAIN P.C.B. (FOIL SIDE).............. .

ASOUT THE WIRE PROCESSING ............................................... 12
CHECKING THE OPERATION PROBLEMS ON THE
TRAVERSE DECK (OPTICAL PICKUP) .......................... t3, 1

NOTE FOR SERVICE
INTERNAL CONNECTIONS OF LCD
MEASUREMENTS AND ADJUSTMENTS .
DISPLAY FUNCTION OF AUTOMATICALLY-ADJUSTED
RESULTS (SELF-CH ECK FUNCTION
BLOCK DIAGRAM.......
SCHEMATIC DIAGRAM
PRINTED CIRCUIT BOARD A
WIRING CONNECTION DIAGRAM
TERMINAL FUNCTION OF IC'
REPLACEMENT PARTS LIST
CABINET PARTS LOCATION...
RESISTORS Br CAPACITORS
PACKAGING ..........................

I LOCATION AND FUNCTION OF CONTROLS

| Player controls

(D Open button (OPEN)

® Memory/recall button
(MEMORY/RECALL)
Use to program tracks or to conlirm the
contents ol program.

® Repeat button (REPEAT)
Press to aclivale the one track repeat
and the all repeat Iunctions.

@ Skip/search buttons
(Nd-SKIPI-SEARCH >>l)
Press to move forward and backward
through the tracks on the disc. or to
hear the CIISC sound when searching at
high speed while playing.

(9 Stop/operation oft button
(I STOP/OPE OFF)

© Earphones/headphones volume
control (VOLUME)

(2) Play/pause button
(> II PLAV/PAUSE)

ASC/S-XBS selector
(ASC/S-XBS)
Use to change the tone quality (ear-
phones only).

© Earphones/headphones lack
( Q )160 o3.5

Out jack (OUT) 50K) (1)15

® DC In lack
(DC IN 4.5 V 9-6-6)

® Play mode selector
(PLAV MODE)
Use to select the lollowing play modes'
RESUME: Resume Iunction
NORMAL: Sequential and program

® Hold switch (HOLD)

Use to prevent unintended operation
You cannot open the disc holder and
activate luncnonal buttons when player
IS in the hold state The display window
shows "ha I d' (hold). Betore op-
erating the llont panel buttons. be sure
to release the player lrom the hold
state.

RANDOM: Sixtiem play
Display J
21:: e i"i"rliiii:-P>--;
Sétfitluu; LIL-lute

®
® Random Indicator (RANDOM)
Lights during the random play mode,
® Track dlsplay
Shows the number (up to 99) ol the
track
® Time display
Shows the elapsed playing time ol the
current track and the total playing time
at the disc.

@ Battery check indicatorHXl )
Flashes on and oft when the batteries
are weak

Memory indicator (M)

Lights dUTan the program play mode.

Resume Indicator (RESUME)
Lights when the resume mode.

® Repeat Indicators
One track repeat indicator (1 OI
All track repeat tndlCaIOl (ALL C) )

Page 14

SL-XP330 SL-XP330

I MEASUREMENTS AND ADJ USTM ENTS

Warning: This product uses a laser diode. Refer to caution statements on page 3.

ACHTUNG: - Die Iasereinheit nicht zerlegen.
- Die lasereinheit dart nur gegen eine vom hersleller spezifizierte einheit ausgetauscht werden.

- Measuring instruments and special tools

- Test discs

1. Playabillty test disc (822910540
2. Uneven test CIISC (SZZPlOSBC)

- Musical program disc (ordinary)
- DC voltmeter
- Lead wire (for test points)

- Test short land
Short-circuit the lands of the laser ONiOFF switch [$201) by soldering them. It turns "ON" position.
(Refer to below figure or printed circuit board and wiring connection diagram for short land location.)

Note: Remove the solders lrom the lands after adjustment.

0 Adjustment point

Notes) 1. Please refer to the printed circuit board and Wiring connection diagram for test point locations.
2. Take care to connect CN101.

820!

(Laser ON/OFF SW) Power supply

voltage odj,

Short land for .
operation check loser l
ON/OFF l SZOI) _|

- Adjustment procedure

(1) POWER SUPPLY VOLTAGE ADJUSTMENT
1. Connectlhe DC voltmeter to TP103 (VCC)(+) and 3. Insert the test disc, and switch the player power

TP104 (GND). ON,
2. Insert the full recharging two rechageable 4. Adjust VH1 on the main PCB. at 4.05r0.05\l.
batteries.

(2) CHECK OF PLAY OPERATION

- Automatic adjustment

On our conventional type portable CD player, there were mounted 6 semi-fixed controls for each adjustment. Since the

SLvXP330 servo circuit is equipped with an automatic adjusting circuit, these controls are removed from SL»XP330.

On conventional portable CD player 0n SL-XP330

Tracking Oflset Adjustment VFI (TOO) .

Focus Oflset Adjustment vn (FOC) j " N° Ad'usmem
Tracking Gain Adjustment VR (TGC)

Focus Gain Adjustment VFt (FGC) a »
Tracking Balance Adjustment VFt (TElC)

Focus Balance Adjustment VFl (FBC)

Automatic Adjusting Circuit

PFIPWNT

Total 6 Adjustment VRs # No Adjustment VR

Although all discs are manufactured according to the same specifications, their characteristics are not always precisely

the same because they are produced by different manufacturers in various lots, or have different warp etc.

SL-XP330 automaticaliy controls the servo circuit to obtain optimum performance according to any disc's characteristics.

Therefore, no malfunction occurs because of mis-adjustment.

IDISPLAY FUNCTION OF AUTOMATICALLY-ADJUSTED RESULTS
(SELF-CHECK FUNCTION)

On this nuit (SL-XP330), each automatically-adjusted result are displayed on the LCD. This function is convenient to
check or identify which automatic adjustment circuit is incorrect. The followings are the contents of the auto-

matically-adjusted result displays (sell-check function).

. How to display automatically-adjusted results
1. Load the test disc (SZZP1054C).

2. Press the I44 (SKIPISEARCH) and Dbl (SKIPISEARCH) Buttons simultaneously and hold them, and additionally

press the bill (PLAYiPAUSE) Button,
3. Press lhe® (STOP/POWER OFF) Button once.
4. An automatically-adjusted result is displayed on the LCD. [Flefer to the next page.)
- Display of automtically-adjusted results (self-check function)

LCD Dlsplay

-Displayed in hexadecimal system from 0~F.

=l< Checking Skip Search

1. Play an ordinary musical program disc.

2. Press the skip button to check for normal skip
search operation (in both the forward and
backward directions).

>4: Checking Manual Search

Play an ordinary musical program disc.

Press the manual search button to check for
smooth manual search operations at either low or
high speed (in both the forward and backward
directions).

N-I.

Checking Playablllty

. Play the 0.7mm black dot and the 0.7mm wedge

on the playability test disc (SZZP1054C) and
verify that no sound skip or noise occurs.

. Play the middle tracks of the uneven test disc

(SZZP1056C) and verify that no sound skip or
noise occurs.

715v

(Each bit)
OK.,.. .0
(Example) TGC FGC TBC FBC ..............
NG ............... 1
l l l l
1) 0 0 0 0 =9 E-u" is displayed.

(All adjustments are OK.)

715,