SONY MZB50
Manual de Servicio

� Adjustment method of VC PWM Duty (L) (mode number: 762) 1. Select the manual mode of the test mode, and set the mode number 762. (See page 11)
R517 L

C526

digital voltmeter TP914 (VR) TP5105 (GND)
C610

LCD display

VclPWM
762
MAIN BOARD (SIDE B)

2. Connect a digital voltmeter to the TP915 (VC) on the MAIN board, and adjust [EASY SEARCH +] key (voltage up) or [EASY SEARCH --] key (voltage down) so that the voltage becomes 2.5 ± 0.02 V. Proceed to the next step without pressing X key if voltage is
C504 C503

TP915 (VC)

already adjusted.
digital voltmeter
R609 C611 R608

TP914 (VR)
C501 R505 R507 C502

5

R937 R924 R936 R923 R937 R936 R923 R924

TP5105
MAIN BOARD (SIDE B)
TP915 (VC)

629

R520

C516 C511 C508 C 09

C504 C504 C503

TP915 (VC)

C517

TP5105 (GND)

(GND)
C610
R535 R535

3. Press the X key to write the adjusted value.
Q

� Adjustment method of VREM PWM Duty (L) (mode number: 764) 1. Select the manual mode of the test mode, and set the mode number 764. (See page 11)
C514 R518 L L

R537 R537 R536

C514

C501 R505 C517 C516 C511 R520 C508 R507 C502

VrlVcl
764
TP5105 (GND)

2. Connect a digital voltmeter to the TP914 (VR) on the MAIN board, and adjust [EASY SEARCH +] key (voltage up) or

C514 R518

[EASY SEARCH --] key (voltage down) so that the voltage
3. Press the X key to write the adjusted value. � Adjustment method of VREM PWM Duty (H) (mode number: 763) 1. Select the manual mode of the test mode, and set the mode number 763. (See page 11)
LCD display

becomes 2.5 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted.
digital voltmeter TP914 (VR) TP5105 (GND)
C610

VrhVcl
763
MAIN BOARD (SIDE B)

2. Connect a digital voltmeter to the TP914 (VR) on the MAIN board, and adjust [EASY SEARCH +] key (voltage up) or [EASY SEARCH --] key (voltage down) so that the voltage becomes 2.75 ± 0.02 V. Proceed to the next step without pressing X key if voltage is already adjusted.

TP915 (VC)

TP914 (VR)
C501 R505 C517 629 R520 C516 C511 C508 C 09
R536 R518 C526

R517 R517

LCD display

C526

R507 C502

3. Press the X key to write the adjusted value.

� 18 �

C503

TP5105 (GND)