Sony KL-W9000 service manual Use TP5201

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Adjustment Items and Procedure

Tools and

Test Points

Adjustment Places

Illustration Waveforms and Values

Signals

2. IC Level Adjustment

1. Using *I2C bus encoder, set the NT-WIDE mode.

*I2C bus encoder

2. Enter NT double speed 10-step signal of bias 2.2V and ampli-

*

tude 1.8Vp-p to the CN5201 pins 2~4.

2.0 ± 0.02 Vp-p

$

100 IRE

10 IRE

10 IRE

4

100 IRE

B

GND

2.7 ± 0.02 V

A

Use TP5201,

TP5401 and TP5601

10 IRE

as reference GND

respectively.

1)

R channel

* A : 1.35±0.02Vp-p

* DC power

* TP5211 [RLBS]

1. Using *DC power, apply 0V to *TP5211.

TP5207 is ref. GND

* B : 5.70±0.02Vp-p

* TP5203 [R-SIG2]

* Oscilloscope

* TP5203 [R-SIG2]

* RV5205 [R. GAIN]

2. Connect *oscilloscope to *TP5203, and adjust *RV5205 so

that 10 IRE ~ 100 IRE (A) becomes *1.35±0.02Vp-p.

* TP5411 [GLBS]

* RV5201 [R. BIAS]

3. Adjust *RV5201 so that the forward 10 IRE ~ reverse 10 IRE

TP5407 is ref. GND

(B) becomes *5.70±0.02Vp-p at *TP5203.

* TP5202 [R-SIG1]

4. Confirm that a difference in voltage amplitude of forward 10

* TP5204 [R-SIG3]

10 IRE

IRE ~ 100 IRE and forward 10 IRE ~ reverse 10 IRE between

* TP5203 [R-SIG2]

waveform at *TP5202,*TP5204 and waveform at *TP5203 is

within ±150mV.

2)

G channel

100 IRE

B

* DC power

1. Using *DC power, apply 0V to *TP5411.

* Oscilloscope

* TP5403 [G-SIG2]

A

2. Connect *oscilloscope to *TP5403, and adjust *RV5407 so

that 10 IRE ~ 100 IRE (A) becomes *1.35±0.02Vp-p.

* TP5403 [G-SIG2]

10 IRE

3. Adjust *RV5403 so that the forward 10 IRE ~ reverse 10 IRE

(B) becomes *6.10±0.02Vp-p at *TP5403.

* TP5402 [G-SIG1]

* RV5407 [G. GAIN]

4. Confirm that a difference in voltage amplitude of forward 10

* TP5404 [G-SIG3]

IRE ~100 IRE and forward 10 IRE~ reverse 10 IRE between

* RV5403 [G. BIAS]

* A : 1.35

±

* TP5403 [G-SIG2]

waveform at *TP5602, *5604 and waveform at *TP5603 is

0.02Vp-p

* B : 6.10

±

within ±150mV.

0.02Vp-p

KL-W7000/W9000RM-Y980