Technics SU-VZ220 Service Manual

ORDER NO. AD9111277C8
Service
Manual
Stereo Integrated Amplifier
SPECIFICATIONS
(DIN 45 500)
20 Hz~20 kHz continuous power output
both channeis driven
1 kHz continuous power output
both channeis driven (THD:1%)
63 Hz~12.5 kHz continuous power output
both channeis driven (THD: 0.7%)
Total harmonic distortion
rated power at 20 Hz~ 20 kHz
rated power at 1 kHz
half power at 20 Hz~ 20 kHz
half power at 1 kHz
2x30 W (8 Q)
2x38 W (8 Q)
2x50 W (4.Q)
2x35 W (8 Q)
2* 45 W (4Q)
0.07% (8 Q)
0.02% (8 Q)
0.05% (8 Q)
0.02% (8 Q)
intermodulation distortion (50 Hz:7 kHz = 4:1, SMPTE)
rated power
Residual hum and noise
Damping factor
“Headphones output level and impedance
Load impedance
AorB
A and B
Input sensitivity and impedance
PHONO MM
TUNER, CD, AUX, TAPE/ADAPT
Phono maximum input voltage (1 kHz, RMS)
0.07% (8 Q)
1mv
40 (8 Q)
20 (4 Q)
450 mV/330 Q
4~16Q
8~160
2.5 mV/47 kQ
150 mV/18 kQ
MM 150 mV (150 mV, IHF '66)
SIN (rated power, 4 )
PHONO MM
TUNER, CD, AUX, TAPE/ADAPT
S/N at —26dB power (4 Q)
PHONO MM :
TUNER, CD, AUX, TAPE/ADAPT
S/N at 50 mW power (4 ©)
PHONO MM
TUNER, CD, AUX, TAPEJADAPT
76 dB (77 dB, IHF 66)
91 dB (98 dB, IHF '66)
68 dB
70 dB
64 dB
64 dB
‘Technics
Amplifier
SU-VZ220
Colour
Cs re ee Black Type
Areas
Suffix for
Model No. Colour
Great Britain
Continental Europe
Germany and Italy
(EG)
Poland
Oceania
Frequency response
PHONO MM _sRIAA standard curve +1 dB (30 Hz~ 15 kHz)
TUNER, CD, AUX, TAPE/ADAPT
3 Hz~80 kHz (+0, —3 dB)
+0 dB, —0.3 dB (20 Hz~20 kHz)
Tone controls
BASS 50 Hz, +10~—-10 dB
TREBLE 20 kHz, +10~ —10 dB
Loudness control (volume at --30 dB) 50 Hz, +9 d8
Output voltage ©
TAPE/ADAPT REC OUT 150 mV
. Channel balance (AUX, 250 Hz~ 6.3 kHz) +1 dB
Channel separation (AUX, 1 kHz) 50 dB
M@ GENERAL
Power consumption 125 W
Power supply AC 50 Hz/60 Hz, 230/240 V
Dimensions (W x H x D) 430 x 125 x 320 mm
Weight 6.1 kg
Notes:
1. Specifications are subject to change without notice.
Weight and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.

Technics SU-VZ220 Specifications

General

Brand	Technics
Model	SU-VZ220
Category	Amplifier
Language	English

Summary

Before Repair Procedures

Protection Circuitry

System Connections

Power Voltage Setting

AC Power Cord Connection

Disassembly Instructions

Cabinet Removal

Step-by-step guide to removing the main chassis cabinet.

Front Panel Assembly Removal

Instructions for detaching the front panel assembly from the unit.

Power Switch PCB Removal

Procedure for removing the power switch printed circuit board.

LED and Headphones PCB Removal

Steps to remove LED and headphone circuit boards.

Volume PCB Removal

Steps to detach the volume control printed circuit board.

Operation PCB Removal

Procedure for removing the operation control printed circuit board.

Main PCB Inspection

Power IC Removal

Power Transformer Removal

Volt Adj/AC IN PCB Removal

Foot Replacement

Schematic Diagram

Wiring Connection Diagram

Block Diagram