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5-39

Use the alignment tapes shown in the following table.
Use tapes specified in the signal column of each adjustment.

Fig. 5-3-3 shows the 75% color bar signals recorded on the alignment
tape for Audio Operation Check.

Measure with video terminal (Terminated at 75 

Ω

)

Tape path adjustment

Switching position adjustment

Audio system adjustment

Operation check

BIST check

Tracking standard (XH2-1)

SW/OL standard (XH2-3)

Audio operation check
(XH5-3 (NTSC), XH5-3P (PAL))

System operation check
(XH5-5 (NTSC), XH5-5P (PAL))

BIST check
(XH5-6 (NTSC), XH5-6P (PAL))

Color bar signal waveform

Color bar pattern

Color bar signal waveform

Color bar pattern

Fig. 5-3-3. Color bar signal of alignment tapes

Video input/output

Special stereo mini jack
Video signal:

1 Vp-p, 75 

Ω

 unbalanced,

sync negative

S video input/output

4-pin mini DIN
Luminance signal:

1 Vp-p, 75 

Ω

 unbalanced,

sync negative

Chrominance signal: 0.286 Vp-p, 75 

Ω

 unbalanced (NTSC)

: 0.300 Vp-p, 75 

Ω

 unbalanced (PAL)

Audio input/output

Special stereo mini jack
Input level: 327mV
Input impedance: More than 47k

Ω

Output level: 327 mV (at load impedance 47 k

Ω

)

Output impedance: Below 2.2 k

Ω

1V

0.714V

0.286V

White (75%)

White (100%)

Y

ello

w

Cy

an

Green

Magenta

Red

Blue

Burst signal

0.286V

Q

I

Horizontal sync signal

(75%)

White

Y

ello

w

Cy

an

Green

Magenta

Red

Blue

Q

I

White

(100%)

Black

1V

0.7V

0.3V

White (100%)

Y

ello

w

Cy

an

Green

Magenta

Red

Blue

Burst signal

Horizontal sync signal

0.3V

(100%)

Y

ello

w

Cy

an

Green

Magenta

Red

Blue

White

Blac

k

5-40

If the B, C, D, E, F page data is erased due to some reason, perform
“1-2. INITIALIZATION OF B, C, D, E, F PAGE DATA”, of “5-1.
CAMERA SECTION ADJUSTMENT”

Check the battery end voltage.

Mode

Camera recording

Subject

Arbitrary

Switch setting
1)

AUTO FOCUS ................................................................. OFF

2)

LCD screen .................................................................. Closed

3)

REC LAMP (Menu display) ............................................. ON

Connection:
1)

Connect the regulated power supply and the digital voltmeter
to the battery terminal as shown in Fig. 5-3-4.

Adjusting method:
1)

Adjust the output voltage of the regulated power supply so that
the digital voltmeter display is 6.0 ± 0.1Vdc.

2)

Turn off the power supply.

3)

Turn on the HOLD switch of the adjustment remote
commander.

4)

Turn on the power supply.

5)

Load a cassette, and set to the camera recording mode.

6)

Check that the REC LAMP is lit continuously.

7)

Decrease the output voltage of the regulated power supply so
that the digital voltmeter display is 5.50 ± 0.01Vdc.

8)

Check that the REC LAMP blinks at 0.8 Hz.

Regulated power supply

Digital volt meter

5.5 

}

 0.01 Vdc

Fig. 5-3-4.

5-41

Before perform the servo and RF system adjustments, check that
the specified value of “36 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.

Adjusting Procedure:
1.

Cap FG duty adjustment

2.

T-reel FG duty adjustment

3.

PLL f

0

 & LPF f

0

 adjustment

4.

Switching position adjustment

5.

AGC center level and APC & AEQ adjustment

6.

PLL f

0

 & LPF f

0

 final adjustment

Set the Cap FG signal duty cycle to 50% to establish an appropriate
capstan servo. If deviated, the uneven rotation of capstan and noise
can occur.

Measurement Point

Display data of page: 3, address: 03

Measuring Instrument

Adjustment remote commander

Adjustment Page

C

Adjustment Address

16

Specified Value

00

Adjusting method:
1)

Close the cassette compartment without inserting a cassette.

2)

Select page: 0, address: 01, and set data: 01.

3)

Select page: 3, address: 01, set data: 1B, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: 3, address: 02, and check that the data changes
starting from “1B” to “2B” to “00” in this order.

5)

Select page: 3, address: 03, and check that the data is “00”.

If the data of page: 3, address: 03 is “01”, adjustment has errors
or the mechanism deck is defective.

6)

Select page: 0, address: 01, and set data: 00.

Adjust the take-up reel FG signal duty cycle to an appropriate value
so that the correct T-reel FG signal is obtained.

Measurement Point

Display data of page: 3, address: 03

Measuring Instrument

Adjustment remote commander

Adjustment Page

C

Adjustment Address

17

Specified Value

00

Adjusting method:
1)

Close the cassette compartment without inserting a cassette.

2)

Select page: 0, address: 01, and set data: 01.

3)

Select page: 3, address: 01, set data: 1C, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: 3, address: 02, and check that the data changes
starting from “1C” to “2C” to “00” in this order.

5)

Select page: 3, address: 03, and check that the data is “00”.

If the data of page: 3, address: 03 is “02”, adjustment has errors
or the mechanism deck is defective.

6)

Select page: 0, address: 01, and set data: 00.

Mode

VTR stop

Measurement Point

Display data of page: 3, address: 03

Measuring Instrument

Adjustment remote commander

Adjustment Page

C

Adjustment Address

1F, 20, 22, 47

Specified Value

Bit2, bit3 and bit6 are “0”

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: 3, address: 01, set data: 30, and press the PAUSE
button of the adjustment remote commander.

3)

Select page: 3, address: 02, and check that the data changes to
“00”.

4)

Select page: 3, address: 03, and check that bit2, bit3 and bit 6
of the data are “0”.

If bit2, bit3 or bit 6 of the data is “1”, there are errors. (For the
error contents, see the following table. For the bit values, refer
to “5-4. SERVICE MODE”, “4-3. 3. Bit value discrimination”.)

5)

Select page: 0, address: 01, and set data: 00.

Bit value of page: 3,
address: 03 data

bit 4 = 1

bit 5 = 1

bit 6 = 1

bit 3 = 1

bit 2 = 1

Error contents

PLL f

0

, even channel is defective

PLL f

0

, odd channel is defective

LPF f

0

 is defective

PLL f

0

, final adjustment is defective

PLL f

0

, final adjustment time-out

5-42

Mode

VTR playback

Signal

SW/OL reference tape (XH2-3)

Measurement Point

Display data of page: 3, address: 03

Measuring Instrument

Adjustment remote commander

Adjustment Page

C

Adjustment Address

10, 11, 12, 13

Specified Value

00

Adjusting method:
1)

Insert the SW/OL reference tape and enter the VTR STOP
mode.

2)

Select page: 0, address: 01, and set data: 01.

3)

Select page: 3, address: 21, and check that the data is “02”.

If the data of page: 3, address: 21 is “72”, the tape top being
played. After playing the tape for 1 to 2 seconds, perform step 4
and higher.

4)

Select page: 3, address: 01, set data: 0D, and press the PAUSE
button of the adjustment remote commander.

5)

Select page: 3, address: 02, and check that the data changes to
“00”.

6)

Select page: 3, address: 03, and check that the data is “00”.

If bit 0 of page: 3, address: 03 data is “1”, the even channel is
defective. If bit 1 is “1”, the odd channel is defective. Contents
of the defect is written into page: C, addresses: 10 and 12. See
the following table. (For the bit values, refer to “5-4. SERVICE
MODE”, “4-3. 3. Bit value discrimination”. )

7)

Select page: 0, address: 01, and set data: 00.

Data of page: C,
address: 10

EE

E8

E7

Contents of defect

Writing into EEPROM (IC2404) is defective

Adjustment data is out of range

No data is returned from IC1900 (TRX)

Data of page: C,
address: 12

EE

E8

E7

Contents of defect

Writing into EEPROM (IC2404) is defective

Adjustment data is out of range

No data is returned from IC1900 (TRX)

Mode

Camera recording

Subject

Arbitrary

Adjusting method:
1)

Select page: 2, address: 30, and set data: 40.

2)

Record the camera signal for three minutes.

Mode

Playback

Signal

Recorded signal at “Preparations
before adjustments”

Measurement Point

Pin @º of CN2904 (RF MON) (Note 1)

Measuring Instrument

Oscilloscope

Adjustment Page

C

Adjustment Address

1E

Specified Value

The display data of page: 3, address:
03 is “00”

Connect a 75

Ω

 resistor between Pin @º and Pin !ª (GND) of

CN2904.
75

Ω

 resistor (Parts code: 1-247-804-11)

Adjusting method:
1)

Select page: 0, address: 01, and set data: 01.

2)

Playback the recorded signal at “Preparations before
adjustments”

3)

Select page: 3, address: 33, and set data: 08.

4)

Confirm that the playback RF signal is stable.

5)

Select page: 3, address: 01, set data: 23, and press the PAUSE
button of the adjustment remote commander.

6)

Select page: 3, address: 02, and check that the data is “00”.

7)

Select page: 3, address: 03, and check that the data is “00”.

If the data of page: 3, address: 03 is other than “00”, adjustment
has errors. (Take an appropriate remedial measures according
to the errors referring to the following table. )

8)

Perform “APC & AEQ Adjustment”.

If this data is displayed twice successively, the machine is defective.

Data of page: 3,
address: 03

20

30

40

50

Contents of defect

Perform re-adjustment. (Note 2)

The machine is defective

Perform re-adjustment (Note 2)

The machine is defective

CN2904