JVC XL-FZ700BK Service Manual

SERVICE MANUAL

COMPACT DISC AUTOMATIC CHANGER

XL-FZ700BK

Area suffix

J ------------------- U.S.A. C ---------------- Canada

XL-FZ700BK

OPEN/ CLOSE

REPEAT

DISC 1 DISC 2 DISC 3 DISC 4

DISC 5 DISC 6 DISC 7 DISCSKIP

PROGRAM CANCEL CALLRANDOM

2341

6785

10 +109

RM-SXLFZ700J

REMOTE CONTROL

STANDBY/ON

STANDBY

STANDBY/ON

Contents

Safety precautions Importance administering

point on the safety

Preventing static electricity

CD-R/RW PLAYBACK 1BIT P

. E .

M D

. D .

CONVERTER

DISC 1 DISC 2 DISC 3 DISC 4 DISC 5 DISC 6 DISC 7

XL-FZ700 COMPACT DISC AUTOMATIC CHANGER

1-2

Disassembly method Adjustment method

1-3

Description of major ICs

1-4

EXCHANGE/DISC SKIP

PLAY & EXCHANGE

OPEN/CLOSE

PLAY

PAUSE

STOP

DISC

SKIP

1-5 1-19 1-19~26

No.21073

Mar. 2002

XL-FZ700BK

1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.

2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.

3. Many electrical and mechanical parts in the products have special safety-related characteristics. These

characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.

4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.

5. Leakage currnet check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this check.

Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).

Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).

0.15 F AC TYPE

1500 10W

Good earth ground

AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity)

Place this probe on each exposed metal part.

1. This equipment has been designed and manufactured to meet international safety standards.

2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.

3. Repairs m ust be made in accordance with the relevant safety standards.

4. It is essential that safety critical components are replaced by approved parts.

5. If mains voltage selector is provided, check setting for local voltage.

Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.

In regard with component parts appearing on the silk-screen pr inted side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.

(This regulation does not correspond to J and C version.)

1-2

XL-FZ700BK

Importance administering point on the safety

R963

R900

D991

R965

R969

1.6A /125V

FC901 FC902

F901

J901

B1081

B1082

L901

C905 C906

R902

B1611

EP901

C902 C903

C919

D901

C907

R905

R906

B1221

R907

B1131

K902

C915

B1083

R960 C993

B1421

R961

Q991

B1222

D911

R911

HS901

PC901

C918

R910

C992

IC901

B1223

C913

R908

B1811

C908

B1132

C917

B1226

PC902

D974

D972

D973

R976

Q953

R974

R975

R973

R901

D956

B1812

B1813

D957

C997

B1814

D902D903

D954

C981

C996

C989

C909

L957

C995

B1224

D904

L959

C987

C979

L955

B1225

D908

R903

R904

D910

C910

C914

Power supply board (Forward side)

Caution: For continued protection against risk of fire, replace only with same type 1.6A/125V for F901. This symbol specifies type of fast operating fuse.

Precaution: Pour eviter risques de feux, remplacez le fusible de surete de et F901 comme le meme type que 1.6A/125V. Ce sont des fusibles suretes qui functionnes rapide.

1-3

XL-FZ700BK

Preventing static electricity

1.Grounding to prevent damage by static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

2.About the earth processing for the destruction prevention by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players. Be careful to use proper grounding in the area where repairs are being performed.

2-1 Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.

2-2 Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron plate

3. Handling the optical pickup

1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)

2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode.

4.Handling the traverse unit (optical pickup)

1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector.

3. Handle the flexible cable carefully as it may break when subjected to strong force.

4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

Attention when traverse mechanism unit is decomposed

*Please refer to "Disassembly method" in the text for how to remove.

Solder soldering part on the

1. flexible board, before the card wire is removed from the connector on the flexible board or the connector CN601 on the main board. (Disconnecting the flexible

Loading base assembly

Traverse

mechanism

(reverse side)

unit

CD mechanism board

Pickup unit

Flexible board

wire without soldering may cause damage to the pickup.)

Please remove solder after

2. connecting the flexible wire

Connector

Card wire

CN601

with when you install picking up in the substrate.

Main board

CD mechanism board

Connector

Soldering part

1-4

XL-FZ700BK

Disassembly method

Removing the top cover (See Fig.1)

Remove the four screws A attaching the top cover on the both sides of the body.

Remove the two screws B on the back of the body.

Remove the top cover from behind in the direction of the arrow while pulling both sides outward.

Removing the front panel assembly

(See Fig.2 and 3)

Prior to performing the following procedure, remove the top cover.

Remove the three screws C attaching the front panel assembly on the bottom of the body.

Remove the three screws D attaching the front panel assembly.

Disconnect the card wire from the connector CN805, CN801 and CN803 on the main board and detach the front panel assembly toward the front.

Top cover

Front panel assembly

(bottom side)

Fig.1

Fig.2

Front panel assembly

Removing the main try assembly (See Fig.4 and 5)

Prior to performing the following procedure, remove the top cover and front panel assembly.

Hook a bar on the hole of the load base, then turn

1. the load base clockwise. Then the main tray assembly will be opened.

Disconnect the card wire from the connector CN841

2. on the relay board.

CN805 CN801

CN803

Main board

(bottom side)

Fig.3

Load base

(a part)

A bar

Hole

While preventing the hook a from getting caught on

3. the hook b, draw out the main tray assembly from the loading base assembly.

Fig.4

1-5

XL-FZ700BK

(Rear side)

Main tray assembly

(Front side)

CN841(On the relay board)

Removing the loading base assembly

(See Fig.6)

Prior to performing the following procedure, remove the top cover and main tray assembly.

Remove the seven screws E(top side:6, front side:1) attaching the loading base assembly.

Hook a

(Main tray assembly)

Hook b

(Loading base assembly)

Loading base assembly

Fig.5

(Top side)

Main tray assembly

Loading base assembly

(Front side)

Loading base assembly

Disconnect the harness from the connector CN602, CN808 and CN809 on the main board.

CAUTION!! Before removing the card wire which

connects the flexible board and main board, solder the soldering part and make it shortcircuit. Moreover, while having removed the card wire, don't remove this solder.

Disconnect the card wire from the connector CN601 on the main board.

Removing the rear panel (See Fig.7)

Prior to performing the following procedure, remove the top cover.

Remove the four screws F and one screw G attaching each board to the rear panel .

Remove the three screws H attaching the rear panel on the back of the body.

Removing the relay board (See Fig.8)

Prior to performing the following procedure, remove the top cover, front panel assembly, main tray assembly and loading base assembly.

Main board

CN809

CN808 CN602

CN601

CD mechanism board

Soldering part

(Loading base assembly reverse side

Traverse mechanism unit)

Pickup unit

Flexible board

Connector

Card wire(To connector CN601 on the main board)

Fig.6

Disconnect the harness from the connector CN810 and CN811 on the main board.

Remove the two screws I attaching the relay board.

1-6

Fig.7

XL-FZ700BK

)

Removing the main board (See Fig.8)

Prior to performing the following procedure, remove the top cover, front panel assembly, main tray assembly and loading base assembly.

Disconnect the harness from the connector CN810, CN811, CN951, CN953, CN955 and CN957 on the main board.

Remove the four screws J attaching the main board.

Remove the four screws F attaching the main board to the rear panel (see fig. 7).

Removing the power supply board (See Fig.8)

Prior to performing the following procedure, remove the top cover, front panel assembly, main tray assembly and loading base assembly.

Disconnect the harness from the connector CN951, CN953, CN955 and CN957 on the main board.

Remove the four screws K attaching the power supply board.

CN955

/CN957

CN951

/CN953

CN810

/CN811

Main board

Relay board

Power supply board

after removing

Remove the one screw G attaching the power supply board to the rear panel (see fig. 7).

Remove the protect sheet if needed.

Removing the operation switch board, power switch board and display board (See Fig.1 and 2)

Prior to performing the following procedure, remove the top cover and the front panel assembly.

Remove the six screws A attaching the operation switch board on the inner of the front panel assembly. Disconnect the card wire from the connector CN804 and CN861 on the operation switch board, if needed.

2. Remove the two screws B attaching the power switch board on the inner of the front panel assembly. Disconnect the card wire from the connector CN862 on the power switch board, if needed.

3. Remove the two screws C attaching the display board on the inner of the front panel assembly. Disconnect the card wire from the connector CN802 and CN806 on the display board, if needed.

4. Remove the switch buttons, if needed.

Operation switch board

Display board

CN802

CN804

CN806

Fig.8

Power switch board

Fig.1

Switch button

Fig.2

Protect sheet

Front panel assembly

CN861

Front panel assembl

(inner side)

CN862

(inner side

1-7

XL-FZ700BK

Prior to performing the following procedures, remove the top cover, the front panel assembly and the main tray assembly.

Main tray assembly

Removing the fitting (See Fig.1)

Remove the fitting on the front side of the main tray assembly while releasing the four joints a upward.

Hook

Fitting

Lifts for above while pulling the hook in three places to front side.

Removing the photo sensor board and the sub tray drive motor assembly

(See Fig.2)

Turn over the main tray assembly and remove the two screws A attaching the photo sensor board.

Joints a

Fitting

Joints a

Fig.1

Sub tray drive motor assembly

Disconnect the card wire from connector CN82 on the photo sensor board.

REFERENCE:

Remove the two screws B attaching the sub tray drive motor assembly.

Make sure to disconnect the card wire from the photo sensor board. If the photo sensor board is pulled out from the main tray without disconnecting the card wire, the cam switch side inside of the main tray may be damaged.

When reassembling,

Attach the two wires to the part b on the photo sensor board, and before reattaching the photo sensor board, connect the card wire to connector CN82 and pass the card wire extending from connector CN81 through the notch c of the main tray.

CN81

Part b

Photo sensor board

CN82

Notch c

Main tray

Card wire

Fig.2

1-8

Removing the main tray cover and the main tray (See Fig.3 and 4)

Prior to performing the following procedure, remove the fitting.

Remove the six screws C attaching the main tray on the bottom side of the main tray assembly.

Remove the screw D attaching the main tray cover on the upper side of the main tray assembly.

Push the two joint tabs d on the back of the main tray assembly to release the main tray cover from the tray bottom. Disengage the joint tabs e of the main tray from the main tray cover.

XL-FZ700BK

Main tray

assembly

CAUTION:

After removing the main tray cover, can not up side down !

Main tray cover

Joint tab e

Fig.3

Joint tab e

Joint tab d

Main tray

Fig.4

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