Sharp XL3600 Service Manual
XL-3600
XL-3700/C
SERVICE MANUAL
No. S6247XL3600//
COMP ACT AUDIO SYSTEM
MODEL XL-3600
XL-3600 Compact Audio System consisting of XL-3600
(main unit) and CP-XL3600U (speaker system).
MODEL XL-3700
XL-3700 Compact Audio System consisting of XL-3700
(main unit) and CP-XL3700U (speaker system).
MODEL XL-3700C
XL-3700C Compact Audio System consisting of XL-3700C
(main unit) and CP-XL3700U (speaker system).
• In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified should be used.
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ..................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................ 3
NAMES OF PARTS .......................................................................................................................................................... 4
DISASSEMBLY................................................................................................................................................................. 6
REMOVING AND REINSTALLING THE MAIN PARTS.................................................................................................... 8
ADJUSTMENT.................................................................................................................................................................. 9
TEST MODE ................................................................................................................................................................... 10
NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 17
TYPES OF TRANSISTOR AND LED.............................................................................................................................. 17
WAVEFORMS OF CD CIRCUIT..................................................................................................................................... 18
BLOCK DIAGRAM .......................................................................................................................................................... 19
SCHEMATIC DIAGRAM ................................................................................................................................................. 22
WIRING SIDE OF P.W.BOARD...................................................................................................................................... 30
TROUBLESHOOTING .................................................................................................................................................... 34
FUNCTION TABLE OF IC .............................................................................................................................................. 40
LCD SEGMENT .............................................................................................................................................................. 42
PARTS GUIDE/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SHARP CORPORATION
– 1 –
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
XL-3600
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE
XL-3700/C
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the following
safety checks.
1. Inspect all lead dress to make certain that leads are not pinched
or that hardware is not lodged between the chassis and other metal
parts in the audio product.
2. Inspect all protective devices such as insulating materials, cabinet,
terminal board, adjustment and compartment covers or shields,
mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage current
in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled
by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as conduit or electrical
ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity
to measure the AC voltage drop across the resistor (See diagram).
* Connect the resistor connection to all exposed metal parts having
a return path to the chassis (antenna, metal cabinet, screw heads,
knobs and control shafts, escutcheon, etc.) and measure the AC
voltage drop across the resistor.
All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.)
or more is excessive and indicates a potential shock hazard which
must be corrected before returning the audio product to the owner.
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
■
General
■
Amplifier
■
CD player
■
Tuner
■
Speaker
Power source
AC 120 V, 60 Hz
Power consumption
54 W
Dimensio ns
Width: 8-15/16" (226 mm)
Height: 5-3/4" (145 mm)
Depth: 11-1/2" (292 mm)
Weight
9.1 lbs. (4.1 kg)
Output power
20 watts minimum RMS per channel into 6
ohms from 100 Hz to 20 kHz, 10% total harmonic distortion
Output terminals
Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended:
32 ohms)
CD digital output (optical)
Subwoofer (Audio signal): 500 mV/47 k
ohms
Input terminals
Video/Auxiliary (audio signal): 500 mV/47 k
ohms
Type
Compact disc player
Signal readout
Non-contact, 3-beam semiconductor laser
pickup
D/A converter
1-bit D/A converter
Frequency response
20 - 20,000 Hz
Dynamic range
90 dB (1 kHz)
Frequency range
FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Type
2-way type speaker system
2" (5 cm) Tweeter
4" (10 cm) Woofer
Maximum input
power
50 W
Rated input power
25 W
Impedance
6 ohms
Dimensions
Width: 5-3/4" (146 mm)
Height: 10-9/16" (267 mm)
Depth: 8" (203 mm)
Weight
4.7 lbs. (2.1 kg)/each
■
Amplifier
Output power
RMS: 50 W (25 W + 25 W ) (10 % T.H.D.)
Output terminals
Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended:
32 ohms)
CD digital output (optical)
Subwoofer (Audio signal): 500 mV/47 k
ohms
Input terminals
Video/Auxiliary (audio signal): 500 mV/47 k
ohms
TO THE OPERATION MANUAL.
SPECIFICATIONS
XL-3600/XL-3700
XL-3600
XL-3700/C
XL-3700C
Specifications for this model are subject to change without
prior notice.
– 3 –
XL-3600
XL-3700/C
NAMES OF PARTS
■
Front panel
6
8
1
9
11
12
10
2
3
4
3
1
2
5
6
7
4
5
1.CD Compartment
2.CD Open/Close Button
3.Power Button
4.Function Selector Button
5.Bass/Treble Selector Button
6.Memory/Set Button
7.Clear Button
8.CD Stop, Tuning Down Button
9.CD Track Up or Fast Forward,
Tuner Preset Up Button
10.CD Track Down or Fast Reverse,
Tuner Preset Down Button
11.Volume Up and Down Buttons
12.CD Play or Pause, Tuning Up Button
■
Display
1.Timer Play Indic a tor
2.Sleep Indicator
3.CD Random Play Indicator
4.Memory Indicator
5.FM Stereo Mode Indicator
6.CD Play Indicator
7.CD Repeat Play Indicator
8.FM Stereo Receiving Indicator
9.Surround Indicator
8
7
9
1
2
3
4
5
6
1
2
3
■
Rear panel
1.Subwoofer Output Jack
2.CD Digital Output Jack
3.Headphone Jack
4.AM Antenna Terminal
5.Antenna Earth Terminal
6.FM 75 Ohms Antenna Jack
7.Cooling Fan
8.Video/Auxiliary (Audio Signal) Input Jacks
9.Speaker Terminals
10.AC Power Input Jack
7
8
9
10
4
■
Speaker system
1.Tweeter
2.Woofer
3.Bass Reflex Duct
4.Speaker Terminals
Speaker grilles are removable:
Make sure nothing comes into contact with the
speaker diaphragms when you remove the
speaker grilles.
Placing the speaker system: Left speaker Right speaker
There is no distinction between
the right and the left speakers.
Notes:
●
The speakers are magnetically shielded.
Therefore, they do not affect the display even if you use them near
the TV. However, some color variation may occur, depending on
the type of TV used.
If color variation occurs...
●
Turn off the TV (from the power switch).
After 15 - 30 minutes, turn the TV on again.
If the color variation is still present...
●
Move the speakers further away from the TV.
●
If any kind of magnet or an electromagnet is placed too close to
the TV and the system, irregular colors may appear on the TV
screen.
– 4 –
10
XL-3600
XL-3700/C
■
Remote control
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
24 25
26 27
21
22
23
Remote Control Transmitter
1.
Power Button
2.
CD Button
3.
Tuner Button
4.
5.Timer Button
6.Clock Button
Memory Button
7.
8.Dimmer Button
9.Surround Button
Volume Up and Down Buttons
10.
Video/Auxiliary Button
11.
Band Selector Butt
12.
Clear Button
13.
14.Sleep Button
15.Random/Repeat Button
CD Open/Close Button
16.
Tuner Preset Up Button
17.
CD Track Down Button
18.
CD Fast Reverse, Tuning Down Button
19.
CD Play Button
20.
CD Track Up Button
21.
CD Fast Forw ard, Tuning Up Button
22.
CD Pause Button
23.
CD Stop Button
24.
Tuner Preset Down Button
25.
Bass Up and Down Buttons
26.
Treble Up and Down Buttons
27.
on
Buttons with " " mark in the illustration can be operated on the remote control only.
– 5 –
XL-3600
Cover,
Rear Panel
Top Cabinet
(A2) x8
(A2) x1
Bottom Cabinet
(A1) x2
ø3 x10mm
,
Hook
(C3) x4
(C1) x5
ø3 x6mm
Bottom Cabinet
Chassis
Bottom
Cabinet
Chassis
1
2
XL-3700/C
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
STEP
1 Top Cabinet 1. Screw .................. (A1) x4 6-1,2
2 Cover,Rear panel 1. Screw .................. (B1) x3 6-1
3 Chassis 1. Screw .................. (C1) x5 6-3
4 Tuner PWB 1. Screw .................. (D1) x1 7-1
5 Terminal PWB 1. Screw .................. (E1) x2 7-1
6 Rear Panel 1. Screw .................. (F1) x1 7-1
7 Main PWB 1. Screw .................. (G1) x5 7-1
8 CD PWB 1. Flat Cable............ (H1) x1 7-2
9 CD Mechanism 1. Screw .................. (J1) x4 7-2
10 LED PWB 1. Screw .................. (K1) x2 7-2
11 Switch PWB 1. Hook.................... (L1) x2 7-3
12 Display PWB 1. Screw .................. (M1) x6 7-3
13 Gear Box 1. Hook .................... (N1) x3 7-3
REMOVAL
PROCEDURE
2. Socket ................. (A2) x9 6-2
2. Screw .................. (C2) x5 6-1
3. Hook .................... (C3) x4 6-3
2. Socket ................. (D2) x1
2. Socket ................. (E2) x2
2. Socket ................. (F2) x1
2. Screw .................. (G2) x2
3. Socket ................. (G3) x2
2. Socket ................. (H2) x2
3. Screw .................. (H3) x4
2. Socket ................. (L2) x1
2. Socket ................. (M2) x1
FIGURE
(A1) x2
ø3 x10mm
(B1) x1
ø3 x10mm
(B1) x1
ø3 x6mm
Top Cabinet
(C2) x5
ø3 x10mm
(B1) x1
ø3 x10mm
Figure 6-1
Figure 6-2
Cover,Rear Panel
Note:
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to protect the optical pickup
from electrostatic damage.
Figure 6-3
– 6 –
XL-3600
Display PWB
CD
Mechanism
Top Cabinet
Holder PWB
CD PWB
LED PWB
Holder,
Indicator Panel,CD
(J1) x4
ø2.5 x10mm
(H1) x1
(H2) x1
(H2) x1
(H3) x4
ø2.5 x10mm
(K1) x2
ø2.5 x10mm
,
,
( A3 ) x2
ø3 x12mm
( A4 ) x4
ø4 x12mm
( A2 ) x2
Special Screw
Net Frame
( A1 ) x1
( A2 ) x2
Special Screw
Woofer
Tweeter
XL-3700/C
(G1) x5
ø3 x8mm
Main PWB
(F2) x1
(E2) x1
(G3) x2
(E2) x1
(G2) x2
ø3 x10mm
Figure 7-1
Chassis
Gear Box
Pull
(E1) x2
ø3 x10mm
Terminal PWB
Rear Panel
(D2) x1
Pull
(F1) x1
ø3 x6mm
(D1) x1
ø3 x10mm
Tuner PWB
Figure 7-2
Switch
Pull
Switch
PWB
Hook
(L1) x2
Switch
PWB
Hook
(L1) x2
Pull
Gear Box
(L2) x1
Hook
(N1) x3
Hook
(N1) x3
Top Cabinet
Figure 7-3
STEP REMOVAL
1 Speaker 1. Net Frame ........... (A1) x1 7-4
PROCEDURE
2. Special Screw ..... (A2) x4
3. Screw .................. (A3) x2
4. Screw .................. (A4) x4
(M2) x1
FIGURE
(M1) x6
ø2.5 x10mm
Display PWB
Figure 7-4
– 7 –
XL-3600
XL-3700/C
REMOVING AND REINSTALLING THE MAIN PARTS
How to remove the CD lid (See Fig. 8-1.)
Perform steps 1 to 13 of the disassembly method to remove
the gear box.(See page 6,7)
1. Remove the screws (A1) x 2 pcs., to remove the CD lid
motor.
2. Remove the hooks (A2) x 3 pcs., to remove the worm wheel.
Caution:
Be careful so that the gear is not damaged.
(The damage gear emits noise during searching.)
Hook
(A2) x3
Worm Wheel
(A1) x2
ø2 x3mm
CD MECHANISM SECTION (See Fig. 8-2.)
Perform steps 1 to 9 of the disassembly method to remove the
CD mechanism.(See page 6,7)
1. Remove the mechanism cover, paying attention to the
pawls (A1)x 4 pcs.
2. Remove the screws (A2) x 2 pcs., to remove the shaft (A3)
x 1 pc.
3. Remove the stop washer (A4) x 1 pc., to remove the gear
(A5) x 1 pc.
4. Remove the pickup unit.
Note:
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to pretect the optical pickup
from electrostatic damage.
(A1) x4
CD Lid Motor
Figure 8-1
Mechanism Cover
(A2) x2
ø2.6 x6mm
CD Mechanism
Shaft
(A3) x1
Gear
(A5) x1
– 8 –
Stop Washer
(A4) x1
Pickup unit
Figure 8-2
ADJUSTMENT
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Frequency
AM IF 450 kHz 1,620 kHz T351 *1
AM Band — 522 kHz (fL): T306 *2
Coverage 1.1 ± 0.1 V
AM 990 kHz 990 kHz (fL): T302 *1
Tracking
*1. Input: Antenna, Output: Speaker Terminal
*2. Input: Input is not connected, Output: TP301
• Setting the Test Mode
Keeping the FF/FWD button and MEMORY/SET button
pressed, turn on POWER. Then, the frequency is initially set
in the memory as shown in Table. Call it with the VOLUME UP/
DOWN button to use it for adjustment and check of tuner
circuit.
Preset No.
1 87.50 MHz 6 522 kHz
2 108.00 MHz 7 1,620 kHz
3 98.00 MHz 8 990 kHz
4 90.00 MHz 9 603 kHz
5 106.00 MHz 10 1,404 kHz
Frequency Display
FM
Preset No.
Setting/
Adjusting
Parts
Instrument
Connection
AM
XL-3600
XL-3700/C
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Frequency
98.00 MHz 98.00 MHz VR351*1 Input: SO301
(30 dBµV) Output: Speaker
*1. Adjust so that an output signal appears.
• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Frequency
87.5 MHz 87.5 MHz 2.2 V ± 0.7 V TP301
108 MHz 108 MHz 7.3 V ± 1.0 V TP301
Display
Display
Adjusting
Parts
Check Point Instrument
Instrument
Connection
Terminal
Connection
ANTENNA
TERMINAL
TP301
SO301
OHMS
20
IC302
FM
75
FM Mute
Level
TUNER PWB-B1
GND
FE301
VR351
T351
AM IF
AM
T302
AM
Tracking fL
T306
AM Band
Coverage fL
IC303
Figure 9 ADJUSTMENT POINTS
– 9 –
XL-3600
XL-3700/C
TEST MODE
The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement,
the aging test mode, and the self-diagnosis test mode for self-judgment in case of final product inspection.
1. Turning on the test mode
For obtaining each test mode, press the POWER button, while keeping pressing the following two buttons in the ordinary standby mode (power off ). In this case, the main unit buttons are valid. When turning the POWER on with remote control buttons,
test modes are not obtained.
[Ordinary test mode]
1. CD Test Mode (TEST 1).....................................BASS/TREBLE + STOP
2. Tuner Test Mode (TEST 2).................................BASS/TREBLE + VOL+
3. Electronic Volume Test Mode (TEST 3)............. BASS/TREBLE + VOL–
4. Timer Test Mode (TEST 4).................................MEMORY/SET + STOP
5. LCD Test Mode (TEST 5)...................................MEMORY/SET + VOL–
6. Electric CD Lid Aging Test Mode (TEST 8)........ MEMORY/SET + VOL+
[Self-diagnosis Test Mode]
1. Button input diagnosis test mode (TEST6).…....MEMORY/SET + PLAY
Processes are different depending on destinations at initial settings.
2. CD Test Mode (TEST 1)
In the CD test mode the operation of each step is possible even if the LID-SW is off. If focus cannot be taken in step 3 or any error
is processed, it is impossible to proceed to the next step. During error processing, end the test mode by pressing the POWER
button or return to the step 1 by pressing the CD STOP button. Any other operations are inhibited.
1. Step 1 Mode
When the CD test mode is obtained, the following display lights up. Then CD initialization operation flow proceeds up to CD
STB off to wait for the following buttons to be pressed.
One second after display lights up
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................After the pickup returns to the innermost periphery, it slides toward the outer periphery while this button
is pressed.
"REW/REV"..............After the pickup returns to the innermost periphery, it slides toward the inner periphery while this button
is pressed. If PICKUP IN is on, input is invalid.
"PLAY" .....................Shift to step 2
"STOP".....................Invalid
"FUNCTION"............Shift to step 5
* In case of initialization, the pickup is moved toward the inner periphery. Any buttons other than "POWER" button are not
accepted until the shift of pickup to the inner periphery is completed at this time. If PICKUP IN SW ON cannot be detected
within 10 seconds, the slide motor stops, and the following error display appears. Press the POWER button to end the test
mode, or press the CD STOP button to return to step 1. Any other operations are inhibited.
– 10 –
XL-3600
XL-3700/C
2. Step 2 Mode
Press the "CD PLAY" button in this mode to transmit the laser lighting command LDON (8400) and turn on the laser. Any other
operations are not performed in this case.
Press the following buttons in this state to obtain the operations specified below.
"POWER" ................ Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY".....................Shift to step 3
"STOP" ....................Return to step 1
"FUNCTION" ...........Shift to step 5
3. Step 3 Mode
While the laser keeps lighting, CD initialization operation flow proceeds up to 'CLV servo ON' to wait for the following buttons
to be pressed.(Focus servo turned on for focus search)
The focus search is repeated to take focus.
Press the following buttons in this state to obtain the operations specified below.
"POWER" ................ Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY".....................If focus has been taken, shift to step 4 is executed. If not, acceptance is inhibited.
"STOP" ....................Return to step 1
"FUNCTION" ...........Shift to step 5
*If the focus is not received after it has been taken, the process returns to step 1.
4. Step 4 Mode
The CLV servo ON command (8600) is transmitted to wait for the following buttons to be pressed. (The disc is rotated for CLV
lock.)
The time display always indicates "0:00".
Press the following buttons in this state to obtain the operations specified below.
"POWER" ................ Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY".....................Shift to step 5
"STOP" ....................Return to step 1
"FUNCTION" ...........Shift to step 5
*If the focus is not received, the process returns to step 1.
– 11 –
XL-3600
XL-3700/C
5. Step 5 Mode
When the CD initialization operation flow is completed, the mute is turned off, and playback is started. Even if playback
reaches the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback passage time
as in case of ordinary CD playback.
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY" .....................Invalid
"STOP".....................Return to step 1
"FUNCTION" ...........Shift to step 6
"MEMORY"..............Shift to step 7
*If the is not received, the process returns to step 1.
Other cautions
• TOC IL is not available for this test mode.
6. Step 6 Mode
Press the FUNCTION button during step 5 operation to set EC/FC bit to "H" by PROSET command (9188 transmission) and
to monitor BUS2 (QDRE) during idle mode. The number of errors for 1 frame (1 sub-code block in IC data) is read by read
command SRC6 during "H". The number of errors accumulated in 750 frames for 10 seconds is displayed on LCD. During
the display, music signal is played back.
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY" .....................Invalid
"STOP".....................Return to step 1
"FUNCTION" ...........Shift to step 5
"MEMORY"..............Shift to step 7
Press FF/PRESET UP or REW/PRESET DOWN button to slide the pickup. The number of errors accumulated up to that time
is cleared and addition is restarted after shift.
*If the focus is not received, the process returns to step 1.
– 12 –
XL-3600
XL-3700/C
7. Step 7 Mode
Press "MEMORY" key during step 6 operation to display automatically adjusted values on LCD in the order as below. Item
names are displayed by left alignment, and adjusted values by right alignment in hexadecimal numbers. Operations other
than display are as same as those for step 5.
a) "Fb" is displayed on the left of LCD. FTBAST command (D480) is transmitted to designate focus balance adjusting
register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds,
operation is shifted to (b).
b) "FG" is displayed on the left of LCD. FTBAST command (D481) is transmitted to designate focus gain adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. The upper two bits, which are invalid,
are displayed as "00". After waiting two seconds, operation is shifted to (c).
c) "Tb" is displayed on the left of LCD. FTBAST command (D482) is transmitted to designate tracking balance adjusting
register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds,
operation is shifted to (d).
d) "TG" is displayed on the left of LCD. FTBAST command (D483) is transmitted to designate tracking gain adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. The upper two bits, which are invalid,
are displayed as "00". After waiting 2 seconds, operation is shifted to (e).
e) "FO" is displayed on the left of LCD. FTBAST command (D484) is transmitted to designate focus offset adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation
is shifted to (f).
f) "TO" is displayed on the left of LCD. FTBAST command (D485) is transmitted to designate tracking offset adjusting
register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds,
operation is shifted to (g).
g) "FF" is displayed on the left of LCD. FTBAST command (D486) is transmitted to designate RF amplitude adjusting register.
Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation
is shifted to (a).
Press the following buttons in this state to obtain the operations specified below.
"POWER".................Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.
"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is
invalid.
"PLAY" .....................Invalid
"STOP".....................Return to step 1
"FUNCTION" ...........Shift to step 6
"MEMORY"..............Shift to step 5
*If the focus is not received, the process returns to step 1.
– 13 –
XL-3600
XL-3700/C
3. Tuner Test Mode (TEST 2)
1. Outline of tuner (radio) test mode
The tuner test mode is intended to store the adjustment and measurement frequencies in the preset memory CH. When
adjusting the tuner section in the production line, adjusting personnel are not required to set frequency.
2. Details of tuner test mode
Press the "REW/PRESET DOWN" and "CD PLAY" buttons in POWER OFF state and turn on the power by the use of
"POWER" button to preset and store frequency for adjustment and measurement of destination specified by the AREA
terminal in the preset memory CH. However, Ordinary 1 and Ordinary 2 are stored in the destinations (selected by SPAN
switching operation) when the test mode is obtained.
" + "MEMORY/SET" KEY SPAN CHANGE)
("FF
(As for frequencies to be preset and stored for each destination, refer to item 3.)
The tuner test mode is started from preset No.1.
The operations of test mode are identical with the ordinary operations of TUNER function. FUNCTION switching is invalid.
It is necessary to discard the content of preset memory when the tuner test mode is ended; be sure to write "0000" or "1111"
bits in the memory to be checked for judging memory error at initial setting and to initialize memory.
When the tuner test mode is obtained, the following display lights for one second.
• The TUNER TEST2 mode is obtained with >> + MEMORY + POWER. ->Turn off AC in the TEST2 mode to restore the initial
state.
Turn off POWER to protect the memory of TEST2 mode.
Turn off POWER again to obtain the ordinary operation while the data is stored in the memory (besides
TUNER).
If AC OFF state is maintained in this state for about 1/2 day, start is executed in the initial state.
• To clear the whole memory, insert the AC cord, pressing MEMORY + CD PLAY.
3. Preset frequencies for various destinations (random preset memory)
CH
1 FM 87.50 MHz
2 FM108.00 MHz
3 FM FM 98.00 MHz
4 STEREO FM 90.00 MHz
5 FM106.00 MHz
• The slant line sections of the table store no memory.
BAND
FM
BAND
6 AM 522 kHz
7 AM1620 kHz
8 AM AM 990 kHz
9 AM 603 kHz
10 AM1404 kHz
AMCH
CH
16-25
26 FM106.00 MHz
27 FM 90.00 MHz
28 FM FM 98.00 MHz
29 MONO FM108.00 MHz
30 FM 87.50 MHz
BAND
FM
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XL-3600
XL-3700/C
4. Electronic volume Test Mode (TEST 3)
When this test mode is obtained, the following display lights for one second.
In this mode, volume is -14 dB (STEP28), BASS/TREBLE is set to 0 (0 dB) and SURROUND mode to OFF, and start-up function
to CD, respectively. The button operations in the test mode are the same as those of ordinary operation except volume UP/
DOWN.
(1) The display is the same as that of ordinary operation except test mode setting.
(2) Unlike the ordinary state, the volume is controlled with the volume UP/DOWN button in accordance with the following three
steps.
Volume(3) BASS/TREBLE and SURROUND are switched when button is pressed..
5. Timer test Mode (TEST 4)
When this test mode is obtained, the following display lights for one second.
Set the current time and timer time according to the following procedure to reproduce the timer.
1.Set the current time to 1:00, the timer to ON time 1:05, the function to CD, and volume to STEP 12, respectively. One minute
is counted as one second, and the timer is reproduced. The fade-in (when playback is started) is executed at a rate of one step
for 1 sec. After completion of fade-in, the fade-out is executed at a rate of one step for 1 sec (WAIT 1 sec inserted).
After completion of fade-out, the power is turned off (after WAIT 1 sec), and the mode is shifted to the standby.
The display during operation is the same as that of ordinary timer operation.
6. LCD Test Mode (TEST 5)
When the LCD test mode is obtained, all the LCD segments are lighted. Then pressing the "PLAY" button switches display as
below.
Lighting of all segments Lighting of odd segments Lighting of even segments
∞ (STEP 0) <-> Volume-14 dB (STEP 23) <-> Volume-0 (STEP 30)
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XL-3600
XL-3700/C
7. Button input diagnosis Test Mode (TEST 6)
When the test mode is obtained, the following is displayed.
This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode, it is checked
whether the "POWER" button was pressed after all the buttons shown below were pressed. If the result is OK, OK is displayed.
If any one of keys was not pressed, an error is displayed. In both cases of OK termination or error termination, the mode is shifted
to the standby mode if the "POWER" button is pressed subsequently.
All models using this type of microcomputer are not always provided with the same buttons. Since the buttons used are different
depending on models, types of buttons to be used are determined by whether RDS, SURROUND, and an electric lid are
available at the initial setting by MODEL port.
The order of buttons to be pressed is not determined. Accordingly, it is checked whether all buttons have been pressed.
1. PU-IN buttons: REW/PRESET DOWN + CD STOP
Since this model is provided with SURROUND (HAVE OR NOT), RDS (HAVE OR NOT), and electric CD lid, the following
10 buttons are detected as all buttons.
PLAY, BASS/TREBLE, FUNCTION, VOLUME UP/DOWN, MEMORY/SET, REW, FF, STOP, CD-OPEN/CLOSE
The OK/NG display of test result is as follows.
8. Electric CD lid Aging Test Mode (TEST 8) (Only for model with electric CD lid)
Outline
OPEN/CLOSE operations of electric CD lid are repeated. The number of repeated times and time period are monitored. If the
lid does not move to the regular position after the specified time, operation is stopped. When an error is detected by [CLID_PRO]
during CLOSE, operation is also stopped.
a. POWER ON for function AUX
CD lid position is checked.
CLOSE position: Operation proceeds to the next process.
Position other than CLOSE: After the lid moves to CLOSE, operation proceeds to the next process.
b. CD lid operation started
OPEN operation
WAIT 1 second
CLOSE operation
WAIT 1 second
c. Operations above are repeated.
Specified monitoring time
OPEN operation: 5 seconds
CLOSE operation: 5 seconds
d. Display
OPEN>CLOSE is counted as 1. 1 to 59999 are counted; if the count is over
59999, display is returned to 0 to repeat counting.
Display when the lid does not move to the regular position after the specified
time
(Ex: Defective operation occurring in the middle of 1538.)
Highlight display of stop when an error is detected by [CLID-PRO]
(Ex: Defective operation occurring in the middle of 1538.)
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