Sylvania ZC350SL8 Bedienungsanleitung

SERVICE MANUAL

DVD RECORDER

ZC350SL8

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all

Funai Equipment. The service procedures recommended by Funai and

described in this service manual are effective methods of performing

service operations. Some of these service special tools should be used

when and as recommended.

It is important to note that this service manual contains various CAUTIONS

and NOTICES which should be carefully read in order to minimize the risk

of personal injury to service personnel. The possibility exists that improper

service methods may damage the equipment. It also is important to

understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE.

Funai could not possibly know, evaluate and advice the service trade of all

conceivable ways in which service might be done or of the possible

hazardous consequences of each way. Consequently, Funai has not

undertaken any such broad evaluation. Accordingly, a servicer who uses a

service procedure or tool which is not recommended by Funai must first

use all precautions thoroughly so that neither his safety nor the safe

operation of the equipment will be jeopardized by the service method

selected.

TABLE OF CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1-1

Laser Beam Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2-1

Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1

Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1

Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5-1

How to Initialize the DVD Recorder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6-1

Firmware Renewal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1

Function Indicator Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8-1

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9-1

Schematic Diagrams / CBA’s and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-1

Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1

System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13-1

IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1

Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-15-1

Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-16-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17-1

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18-1

Manufactured under license from Dolby Laboratories.

“Dolby” and the double-D symbol are trademarks of Dolby Laboratories.

1-1-1 E7H50SP

SPECIFICATIONS

Notes:

1. All Items are measured without pre-emphasis unless otherwise specified.

2. Power supply: AC 120 V, 60 Hz

3. Load imp.: 100 kΩ

4. Room ambient: 5 °C ~ 40 °C

Item Conditions Unit Nominal Limit

1. VIDEO

1-1. Video Output 75 Ωload Vp-p 1.0

1-2. S-Video Output

Y (Luminance) 75 Ωload Vp-p 1.0

C (Chrominance) 75 Ωload Vp-p 0.286

1-3. Component Output

Y (Luminance) 75 Ωload Vp-p 1.0

Cb (U) 75 Ωload Vp-p 0.7

Cr (V) 75 Ωload Vp-p 0.7

2. AUDIO

2-1. Output Level Vrms 2.0

2-2. Frequency Response

DVD-VIDEO LPCM fs = 96 kHz Hz 20 - 44 k

fs = 48 kHz Hz 20 - 20 k

Audio CD fs = 44.1 kHz Hz 20 - 20 k

2-3. Signal/Noise Ratio

DVD-VIDEO LPCM A-Weight + SPCL20kHz dB 122

CD A-Weight + SPCL20kHz dB 122

REC & Playback Input: 2 Vrms, Rec Speed: XP dB 90

2-4. Dynamic Range

DVD-VIDEO LPCM dB 93

CD dB 93

REC & Playback Input: 2 Vrms, Rec Speed: XP dB 90

2-5. THD+N 1 kHz, 0 dB

DVD-VIDEO LPCM % 0.0035

CD % 0.004

REC & Playback Input: 2 Vrms, Rec Speed: XP % 0.0055

1-2-1 RL4NLSP

LASER BEAM SAFETY PRECAUTIONS

This DVD player uses a pickup that emits a laser beam.

The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep

your eyes at least 30 cm away from the pickup lens when the diode is turned on. Do not look directly at the laser

beam.

CAUTION: Use of controls and adjustments, or doing procedures other than those specified herein, may result in

hazardous radiation exposure.

Location: Inside Top of DVD mechanism.

Do not look directly at the laser beam coming

from the pickup or allow it to strike against your

skin.

Drive Mechanism Assembly

Laser Beam Radiation

Laser Pickup

Turntable

1-3-1 DVDN_ISP

IMPORTANT SAFETY PRECAUTIONS

Product Safety Notice

Some electrical and mechanical parts have special

safety-related characteristics which are often not

evident from visual inspection, nor can the protection

they give necessarily be obtained by replacing them

with components rated for higher voltage, wattage,

etc. Parts that have special safety characteristics are

identified by a #on schematics and in parts lists. Use

of a substitute replacement that does not have the

same safety characteristics as the recommended

replacement part might create shock, fire, and/or other

hazards. The Product’s Safety is under review

continuously and new instructions are issued

whenever appropriate. Prior to shipment from the

factory, our products are carefully inspected to confirm

with the recognized product safety and electrical

codes of the countries in which they are to be sold.

However, in order to maintain such compliance, it is

equally important to implement the following

precautions when a set is being serviced.

Precautions during Servicing

A. Parts identified by the #symbol are critical for

safety. Replace only with part number specified.

B. In addition to safety, other parts and assemblies

are specified for conformance with regulations

applying to spurious radiation. These must also be

replaced only with specified replacements.

Examples: RF converters, RF cables, noise

blocking capacitors, and noise blocking filters, etc.

C. Use specified internal wiring. Note especially:

1) Wires covered with PVC tubing

2) Double insulated wires

3) High voltage leads

D. Use specified insulating materials for hazardous

live parts. Note especially:

1) Insulation tape

2) PVC tubing

3) Spacers

4) Insulators for transistors

E. When replacing AC primary side components

(transformers, power cord, etc.), wrap ends of

wires securely about the terminals before

soldering.

F. Observe that the wires do not contact heat

producing parts (heat sinks, oxide metal film

resistors, fusible resistors, etc.).

G. Check that replaced wires do not contact sharp

edges or pointed parts.

H. When a power cord has been replaced, check that

5 - 6 kg of force in any direction will not loosen it.

I. Also check areas surrounding repaired locations.

J. Be careful that foreign objects (screws, solder

droplets, etc.) do not remain inside the set.

K. When connecting or disconnecting the internal

connectors, first, disconnect the AC plug from the

AC outlet.

1-3-2 DVDN_ISP

Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and

wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified

values to verify compliance with safety standards.

1. Clearance Distance

When replacing primary circuit components, confirm

specified clearance distance (d) and (d’) between

soldered terminals, and between terminals and

surrounding metallic parts. (See Fig. 1)

Table 1: Ratings for selected area

Note: This table is unofficial and for reference only. Be

sure to confirm the precise values.

2. Leakage Current Test

Confirm the specified (or lower) leakage current

between B (earth ground, power cord plug prongs) and

externally exposed accessible parts (RF terminals,

antenna terminals, video and audio input and output

terminals, microphone jacks, earphone jacks, etc.) is

lower than or equal to the specified value in the table

below.

Measuring Method (Power ON):

Insert load Z between B (earth ground, power cord plug

prongs) and exposed accessible parts. Use an AC

voltmeter to measure across the terminals of load Z.

See Fig. 2 and the following table.

Table 2: Leakage current ratings for selected areas

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

AC Line Voltage Clearance Distance (d), (d’)

120 V ≥3.2 mm (0.126 inches)

AC Line Voltage Load Z Leakage Current (i) Earth Ground (B) to:

120 V 0.15 µF CAP. & 1.5 kΩRES.

Connected in parallel i ≤0.5 mA Peak Exposed accessible parts

Chassis or Secondary Conductor

Primary Circuit

Fig. 1

d' d

AC Voltmeter

(High Impedance)

Exposed Accessible Part

BEarth Ground

Power Cord Plug Prongs

Fig. 2

1-4-1 DVDN_SN

STANDARD NOTES FOR SERVICING

Circuit Board Indications

1. The output pin of the 3 pin Regulator ICs is

indicated as shown.

2. For other ICs, pin 1 and every fifth pin are

indicated as shown.

3. The 1st pin of every male connector is indicated as

shown.

Instructions for Connectors

1. When you connect or disconnect the FFC (Flexible

Foil Connector) cable, be sure to first disconnect

the AC cord.

2. FFC (Flexible Foil Connector) cable should be

inserted parallel into the connector, not at an

angle.

Pb (Lead) Free Solder

When soldering, be sure to use the Pb free solder.

How to Remove / Install Flat Pack-IC

1. Removal

With Hot-Air Flat Pack-IC Desoldering Machine:

1. Prepare the hot-air flat pack-IC desoldering

machine, then apply hot air to the Flat Pack-IC

(about 5 to 6 seconds). (Fig. S-1-1)

2. Remove the flat pack-IC with tweezers while

applying the hot air.

3. Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply

soldering iron to center of the flat pack-IC and heat

up. Then remove (glue will be melted). (Fig. S-1-6)

4. Release the flat pack-IC from the CBA using

tweezers. (Fig. S-1-6)

CAUTION:

1. The Flat Pack-IC shape may differ by models. Use

an appropriate hot-air flat pack-IC desoldering

machine, whose shape matches that of the Flat

Pack-IC.

2. Do not supply hot air to the chip parts around the

flat pack-IC for over 6 seconds because damage

to the chip parts may occur. Put masking tape

around the flat pack-IC to protect other parts from

damage. (Fig. S-1-2)

Top View

Out In

Bottom View

Input

Pin 1

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

Fig. S-1-1

1-4-2 DVDN_SN

3. The flat pack-IC on the CBA is affixed with glue, so

be careful not to break or damage the foil of each

pin or the solder lands under the IC when

removing it.

With Soldering Iron:

1. Using desoldering braid, remove the solder from

all pins of the flat pack-IC. When you use solder

flux which is applied to all pins of the flat pack-IC,

you can remove it easily. (Fig. S-1-3)

2. Lift each lead of the flat pack-IC upward one by

one, using a sharp pin or wire to which solder will

not adhere (iron wire). When heating the pins, use

a fine tip soldering iron or a hot air desoldering

machine. (Fig. S-1-4)

3. Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply

soldering iron to center of the flat pack-IC and heat

up. Then remove (glue will be melted). (Fig. S-1-6)

4. Release the flat pack-IC from the CBA using

tweezers. (Fig. S-1-6)

Hot-air

Flat Pack-IC

Desoldering

Machine

CBA

Flat Pack-IC

Tweezers

Masking

Tape

Fig. S-1-2

Flat Pack-IC Desoldering Braid

Soldering Iron

Fig. S-1-3

Fine Tip

Soldering Iron

Sharp

Fig. S-1-4

1-4-3 DVDN_SN

With Iron Wire:

1. Using desoldering braid, remove the solder from

all pins of the flat pack-IC. When you use solder

flux which is applied to all pins of the flat pack-IC,

you can remove it easily. (Fig. S-1-3)

2. Affix the wire to a workbench or solid mounting

point, as shown in Fig. S-1-5.

3. While heating the pins using a fine tip soldering

iron or hot air blower, pull up the wire as the solder

melts so as to lift the IC leads from the CBA

contact pads as shown in Fig. S-1-5.

4. Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply

soldering iron to center of the flat pack-IC and heat

up. Then remove (glue will be melted). (Fig. S-1-6)

5. Release the flat pack-IC from the CBA using

tweezers. (Fig. S-1-6)

Note: When using a soldering iron, care must be

taken to ensure that the flat pack-IC is not

being held by glue. When the flat pack-IC is

removed from the CBA, handle it gently

because it may be damaged if force is applied.

2. Installation

1. Using desoldering braid, remove the solder from

the foil of each pin of the flat pack-IC on the CBA

so you can install a replacement flat pack-IC more

easily.

2. The “●” mark on the flat pack-IC indicates pin 1.

(See Fig. S-1-7.) Be sure this mark matches the 1

on the PCB when positioning for installation. Then

presolder the four corners of the flat pack-IC. (See

Fig. S-1-8.)

3. Solder all pins of the flat pack-IC. Be sure that

none of the pins have solder bridges.

To Solid

Mounting Point

Soldering Iron

Iron Wire

Hot Air Blower

Fig. S-1-5

Fine Tip

Soldering Iron

CBA

Flat Pack-IC

Tweezers

Fig. S-1-6

Example :

Pin 1 of the Flat Pack-IC

is indicated by a " " mark. Fig. S-1-7

Presolder

CBA

Flat Pack-IC

Fig. S-1-8

1-4-4 DVDN_SN

Instructions for Handling Semi-

conductors

Electrostatic breakdown of the semi-conductors may

occur due to a potential difference caused by

electrostatic charge during unpacking or repair work.

1. Ground for Human Body

Be sure to wear a grounding band (1 MΩ) that is

properly grounded to remove any static electricity that

may be charged on the body.

2. Ground for Workbench

Be sure to place a conductive sheet or copper plate

with proper grounding (1 MΩ) on the workbench or

other surface, where the semi-conductors are to be

placed. Because the static electricity charge on

clothing will not escape through the body grounding

band, be careful to avoid contacting semi-conductors

with your clothing.

CBA

Grounding Band

Conductive Sheet or

Copper Plate

1MΩ

CBA

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