Sony Xr-c6200 User manual

MICROFILM

SERVICE MANUAL

FM/MW/SW CASSETTE CAR STEREO

E Model

Model Name Using Similar Mechanism XR-C5100

Tape Transport Mechanism Type MG-25F-136

SPECIFICATIONS

XR-C6200

Dolby noise reduction manufactured under license

from Dolby Laboratories Licensing Corporation.

“DOLBY” and the double-D symbol aare trade-

marks of Dolby Laboratories Licensing Corporation.

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TABLE OF CONTENTS

1. GENERAL

Location of Controls ....................................................... 3

Card Remote Commander .............................................. 4

Resetting the Unit ........................................................... 5

Detaching the Front Panel............................................... 5

Setting the Clock ............................................................. 5

Installation....................................................................... 6

Connections ..................................................................... 7

2. DISASSEMBLY ......................................................... 10

3. ASSEMBLY OF MECHANISM DECK........... 11

4. MECHANICAL ADJUSTMENTS....................... 14

5. ELECTRICAL ADJUSTMENTS

Test Mode ........................................................................ 14

Tape Deck Section .......................................................... 14

Tuner Section .................................................................. 15

6. DIAGRAMS

6-1. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 18

6-2. Printed Wiring Board – MAIN Board – ......................... 19

6-3. Schematic Diagram – MAIN Board (1/2) – ................... 21

6-4. Schematic Diagram – MAIN Board (2/2) – ................... 23

6-5. Printed Wiring Board – KEY Board –........................... 25

6-6. Schematic Diagram – KEY Board – .............................. 27

6-7. IC Pin Function Description ........................................... 32

7. EXPLODED VIEWS................................................ 35

8. ELECTRICAL PARTS LIST ............................... 38

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur-

ing repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering

or unsoldering.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

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SECTION 1

GENERAL This section is extracted from

instruction manual.

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– 10 –

SUB PANEL, MECHANISM DECK (MG-25F-136)

MAIN BOARD, HEAT SINK

Note: Follow the disassembly procedure in the numerical order given.

SECTION 2

DISASSEMBLY

1

three screws

(PTT2.6

×

8)

2

sub panel

3

connector

(CN351)

5

screw

(PTT2.6

×

6)

6

mechanism dec

k

(MG-25F-136)

4

flexible flat cable

(CN301)

1

three screws

(PTT2.6

×

8)

3

two ground point

screws

5

three screws

(PTT2.6

×

8)

5

two screws

(PTT2.6

×

10)

1

screw

(PTT2.6

×

8)

5

three screws

(PTT2.6

×

8)

6

heat sink

2

rubber cap (25)

1

two screws

(PTT2.6

×

8)

4

main board

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– 11 –

SECTION 3

ASSEMBLY OF MECHANISM DECK

HOUSING

ARM (SUCTION)

Note: Follow the assembly procedure in the numerical order given.

A

part

C

part

B

part

D

part

8

Hold the hanger by

bending the claw.

6

Fit projection on

D

part.

4

Fit claw on

B

part.

3

Put the housing

under

A

part.

5

Fit projection on

C

part.

1

Install the catch to the hanger.

2

Install the hanger onto

two claws of the housing.

7

Holder the hanger by bending the claw.

hanger

housing

2

Move the arm (suction) in the arro

w

direction and fit on projection.

1

Fit the arm (suction) on the shaft.

projection

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– 12 –

LEVER (LDG-A)/(LDG-B)

GEAR (LDG-FT)

shaft

A

shaft

B

shaft

C

1

Fit the lever (LDG-A) on

shafts

A

–

C

and install it.

shaft

A

shaft

B

2

Fit the lever (LDG-B) on

shafts

A

and

B

and

install it.

3

type-E stop ring 2.0

gear (LDG-D)

5

gear (LDG-FT)

6

polyethylene washer

2

tension spring (LD-2)

2

tension spring (LD-1)

gear (LDG-FB)

lever (LDG-A)

hole

4

Align hole in the gear (LDG-D)

with hole the lever (LDG-A).

3

Move the lever (LDG-B)

in the arrow direction.

1

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– 13 –

GUIDE (C)

2

guide (C)

1

three claws

two precision screws

(P2

×

2)

capstan/reel motor

(M901)

30˚

MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901)

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– 14 –

SECTION 4

MECHANICAL ADJUSTMENTS SECTION 5

ELECTRICAL ADJUSTMENTS

1. Clean the following parts with a denatured-alcohol-moistened

swab:

playback head pinch roller

rubber belt capstan

idlers

2. Demagnetize the playback head with a head demagnetizer.

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the

parts adjusted.

5. The adjustments should be performed with the power supply

voltage unless otherwise noted.

•Torque Measurement

Mode Tension Meter Meter Reading

Forward CQ-403A more than 90 g

(more than 3.18 oz)

Reverse CQ-403R more than 90 g

(more than 3.18 oz)

•Tape Tension Measurement

Mode Torque Meter Meter Reading

Forward CQ-102C 30 – 65 g•cm

(0.42 – 0.90 oz•inch)

Forward CQ-102C 0.5 – 4.5 g•cm

Back Tension (0.01 – 0.06 oz•inch)

Reverse CQ-102RC 30 – 65 g•cm

(0.42 – 0.90 oz•inch)

Reverse CQ-102RC 0.5 – 4.5 g•cm

Back Tension (0.01 – 0.06 oz•inch)

FF, REW CQ-201B 60 – 200 g•cm

(0.83 – 2.78 oz•inch)

TEST MODE

This set have the test mode function. In the test mode, FM Auto

Scan/Stop Level and MW Auto Scan/Stop Level adjustments can

be performed easier than it in ordinary procedure.

1. Set the “power select” switch (S501) is “A (ON)” position.

2. Turn ON the regulated power supply. (All LEDs on the set

lights up, and the clock is displayed.)

Note: Press the [OFF] button, if the clock is not displayed.

3. Push the preset [4] button.

4. Push the preset [5] button.

5. Press the preset [1] button for more than two seconds.

6. Then the display indicates all lights, the test mode is set.

1. Push the [OFF] button.

2. Return the “power select” switch (S501) to initially set posi-

tion.

See the adjustment location from on page 17 for the

adjustment.

0 dB=0.775 V

Tape Speed Adjustment

Setting:

TAPE DECK SECTION

Procedure:

1. Put the set into the FWD PB mode.

2. Adjust adjustment resistor for inside capstan motor so that the

reading on the speed checker or frequency counter becomes in

specification.

Specification: Constant speed

Adjustment Location: See page 17.

set +–

test tape

WS-48A

(3 kHz, 0 dB)

AUDIO OUT REAR jack (J331)

10 k

Ω

speed checker

or

frequency counter

Speed checker Frequency counter

–1.5 to +2.5% 2,955 to 3,075 Hz

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Procedure:

1. Put the set into the FWD PB mode.

2. Adjust RV101 (L-CH) and RV201 (R-CH) so that the level

meter reading is –6±1 dB (0.35 to 0.44 V).

Adjustment Location: See page 17.

Dolby Level Adjustment

Setting:

[SHIFT] button : ON

Preset [3] (PLAY MODE) and

[4](→) buttons : NR OFF

SOUND (BAS) button : Center

SOUND (TRE) button : Center

SOUND (BAL) button : Center

SOUND (FAD) button : Center

SOUND (VOL) button : Maximum

D-BASS control : OFF

set +

–

test tape

P-4-D400

(400Hz, 0dB)

MAIN board

level meter

MAIN board

TP (GND)







L-CH: TP (DOLBY-L)

R-CH: TP (DOLBY-R)

TUNER SECTION 0 dB=1 µV

Note:

Adjust the tuner section in the sequence shown below.

1. FM Auto Scan/Stop Level Adjustment

2. FM Stereo Separation Adjustment

3. MW Auto Scan/Stop Level Adjustment

FM Auto Scan/Stop Level Adjustment

Setting:

[SOURCE] button : FM

FREQUENCY SELECT switch: FM 200 k

FM RF signal

generator

Carrier frequency : 97.9 MHz

Output level : 22 dB (12.6

µ

V)

Mode : mono

Modulation : 1 kHz, 22.5 kHz deviation (30%)

0.01

µ

F

set

antenna jack (J1)

SHUF

Cautions during repair

When the tuner unit is defective, replace it by a new one be-

cause its internal block is difficult to repair.

Procedure:

1. Set to the test mode. (See page 14)

2. Push the [SOURCE] button and set to FM.

Display

3. Adjust with the volume RV2 on TU1 so that the “FM” indica-

tion turns to “FM0” indication on the display window.

But, in case of already indicated “FM0”, turn the RV2 so that

put out light “0” indication and adjustment.

Display

Adjustment Location: See page 17.

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– 16 –

FM Stereo Separation Adjustment

Setting:

[SOURCE] button : FM

FREQUENCY SELECT switch: FM 200 k

FM Stereo Level meter Level meter

signal generator connection reading (dB)

output channel

L-CH L-CH A

B

R-CH L-CH Adjust RV4 on TU1

for minimum reading.

R-CH R-CH C

D

L-CH R-CH Adjust RV4 on TU1

for minimum reading.

L-CH Stereo separation: A-B

R-CH Stereo separation: C-D

The separations of both channels should be equal.

Specification: Separation more than 30 dB

Adjustment Location: See page 17.

FM RF signal

generator

Carrier frequency : 97.9 MHz

Output level : 70 dB (3.2 mV)

Mode : stereo

Modulation : main: 1 kHz, 33.75 kHz deviation (45%)

sub: 1 kHz, 33.75 kHz deviation (45%)

:19 kHz pilot: 7.5 kHz deviation (10%)

0.01

µ

F

set

antenna jack (J1)

+

–

AUDIO OUT REAR jack (J331

)

level meter

10 k

Ω

Procedure:

MW Auto Scan/Stop Level Adjustment

Make this adjustment after “FM Auto Scan/Stop Level Adjust-

ment”.

Setting:

[SOURCE] button : MW

FREQUENCY SELECT switch: MW 10 k

Procedure:

1. Set to the test mode. (See page 14)

2. Push the [SOURCE] button and set to FM.

3. Push the [MODE] button and set to MW.

Display

4. Adjust with the volume RV1 on TU1 so that the “MW” indi-

cation turns to “MW0” indication on the display window.

But, in case of already indicated “MW0”, turn the RV1 so that

put out light “0” indication and adjustment.

Display

Adjustment Location: See page 17.

AM RF signal

generator

Carrier frequency : 1,000 kHz

30% amplitude

modulation by

1 kHz signal

Output level : 33 dB (44.7

µ

V)

(50

Ω

)set

AM dummy antenna

30

Ω

15 pF

65 pF

antenna jack (J1)

SHUF

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– 17 –

Adjustment Location:

– SET UPPER VIEW –

Tape Speed Adjustment

TU1

RV1 MW Auto Scan/Stop Level Adjustmen

t

RV201 Dolby Level Adjustment (R-ch)

RV2 FM Auto Scan/Stop Level Adjustment

RV4 FM Stereo Separation Adjustment

RV101 Dolby Level Adjustment (L-ch)

– SET BOTTOM VIEW –

TP(GND)

TP(DOLBY-R)

TP(DOLBY-L)

Dolby Level

Adjustment

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– 18 –

6-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on PrintedWiring Board:

•X: parts extracted from the component side.

•Y: parts extracted from the conductor side.

•b: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:

Pattern face side: Partsonthepatternface sideseenfrom

(Conductor Side) the pattern face are indicated.

Parts face side: Parts on the parts face side seen from

(Component Side) the parts face are indicated.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolytics

and tantalums.

• All resistors are in Ωand 1/4W or less unless otherwise

specified.

•C: panel designation.

•U: B+ Line.

• Powervoltage is dc14.4Vand fedwithregulateddcpower

supply from ACC and BATT cords.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.

no mark : FM

( ) : MW (SW)

〈〈 〉〉 :TAPE PLAYBACK

∗: Impossible to measure

• VoltagesaretakenwithaVOM(Input impedance 10MΩ).

Voltage variations may be noted due to normal produc-

tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-

tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F: FM

f: MW (SW)

E:TAPE PLAYBACK

L: BUS AUDIO IN

SECTION 6

DIAGRAMS

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

XR-C6200

D723 D-8

D724 D-9

D731 B-7

D732 D-7

D733 D-7

D734 B-7

D781 D-13

IC21 E-3

IC22 I-2

IC301 H-4

IC331 D-5

IC351 I-12

IC501 I-7

IC551 J-12

IC552 K-11

IC581 C-14

IC611 E-13

IC751 B-7

Q51 E-11

Q52 E-11

Q53 E-11

Q121 G-4

Q151 G-6

Q171 A-4

Q181 A-3

Q251 G-6

Q271 A-3

Q281 B-3

Q351 H-12

Q352 H-12

Q353 H-12

Q354 H-13

Q551 I-10

Q571 D-9

Q581 G-11

Q582 G-13

Q583 F-9

Q601 J-13

Q602 J-12

Q621 F-7

Q622 F-7

– 19 – – 20 –

6-2. PRINTED WIRING BOARD – MAIN Board –

D1 F-1

D51 F-11

D52 D-11

D351 I-12

D352 G-13

D501 J-5

D551 F-12

D552 F-12

D553 I-9

D554 F-12

D571 D-10

D572 D-10

D581 G-11

D582 C-13

D583 B-13

D584 B-13

D585 C-13

D586 B-13

D587 G-12

D588 E-9

D601 J-13

D610 D-11

D611 D-11

D613 D-11

D614 C-11

D621 E-6

D622 E-7

D623 E-6

D624 E-7

D701 J-3

D702 K-3

D703 K-2

D704 K-3

D705 K-5

D706 K-5

D707 K-5

D708 K-5

D709 K-5

D710 J-3

D711 K-5

D712 K-5

D713 K-5

D721 D-8

D722 D-8

Ref. No. Location

• Semiconductor Location

(Page 26)

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

XR-C6200

– 21 – – 22 –

6-3. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 29 for IC Block Diagrams. •See page 31 forWaveforms.

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Sony XR-C6200 User manual

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