DOWNLOAD Sony XR-C7200 / XR-C7200W Service Manual ↓ Size: 962.67 KB | Pages: 35 in PDF or view online for FREE

– 13 –

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

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

– 14 –

2

 guide (C)

1

 three claws

– 15 –

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)

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

swab:

playback head

pinch roller

rubber belt

capstan

idler

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.

Mode

Torque Meter

Meter Reading

Forward

CQ-102C

30 - 65 g•cm

(0.42 - 0.90 oz•inch)

Forward

CQ-102C

0.5 - 4.5g•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 - 4.5g•cm

Back Tension

(0.01 - 0.06 oz•inch)

FF, REW

CQ-201B

60 - 200 g•cm

(0.83 - 2.78 oz•inch)

This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level and AM (MW) Auto Scan/Stop Level adjustments
can be performed easier than it in ordinary procedure.

<Set the Test Mode>
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.)

 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.

<Release the Test mode>
1. Push the 

[OFF]

 button.

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

tion.

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 18.

See the adjustment location from on page 18 for the
adjustment.

0 dB=0.775 V

set

+

–

test tape
WS-48A
(3 kHz, 0 dB)

speaker out terminal

4 

Ω

speed checker

or

frequency counter

Speed checker

Frequency counter

–1.5 to +2.5%

2,955 to 3,075 Hz

– 16 –

[SHIFT]

 button

: ON (light up SET UP and

PLAY MODE)

Preset 

[3]

 (PLAY MODE) button : NR off

SOUND (BAS) button

: Center

SOUND (TRE) button

: Center

SOUND (BAL) button

: Center

SOUND (FAD) button

: Center

SOUND (VOL) button

: Maximum

Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV251 (L-CH) and RV261 (R-CH) so that the level

meter reading is –6±0.5 dB (0.37 to 0.41 V).

Adjustment Location: See page 18.

set

+
–

test tape
P-4-D400
(400Hz, 0 dB)

level meter

MAIN board

TP (DOLBY-L)/
TP (DOLBY-R)

      

 0 dB=1µV

When the tuner unit is defective, replace it by a new one be-
cause its internal block is difficult to repair.

 Adjust the tuner section in the sequence shown below.

1. FM Auto Scan/Stop Level Adjustment
2. FM Noise Focus Adjustment (E model)
3. FM Stereo Separation Adjustment
4. FM Signal Meter Adjustment
5. AM (MW) Auto Scan/Stop Level Adjustment

[SOURCE]

 button

: FM

FREQUENCY SELECT switch (E model): FM 200 k

Procedure:
1. Set to the test mode. (See page 15.)
2. Push the 

[SOURCE]

 button and set to FM.

Display

3. Adjust with the volume RV2 on TU11 so that the “FM” indi-

cation 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 18.

set

antenna jack (CN11)

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

SHUF1

SHUF1