Technics SA-222 M

ORDER NO. §D8012-1811
ervice Manual
FM/AM Stereo Receiver
SA-222
[M], [MC]
Areas
* [M] is available in U.S.A.
* [MC] is available in Canada.
TECHNICAL SPECIFICATIONS _ Specifications are subject to change without notice for further improvement.
I
}
Subsonic
filter
30
Hz,
—6
dB/oct.
(
He
78)
Loudness
control
(volume
at
—30
dB)
50
Hz,
+9
dB
@
AMPLIFIER
SECTION
Low
frequency
damping
factor
30
(8
ohms)
15 (4 ohms)
eat < Load impedance
Rated minimum sine wave RMS power output MAIN or REMOTE 4246 Shine
20 Hz~20 kHz both channels driven MAIN and REMOTE 8~16 ohms
0.04% total harmonic distortion
30W
per
channel
(8
ohms)
@
FM
TUNER
SECTION
1 kHz continuous power output
both channels driven Frequency range 87.9~ 107.9 MHz
0.04% total harmonic distortion Sensitivity 10.8 dBf (1.9 uV, IHF '58)
33W per channel (8 ohms) 50 dB quieting sensitivity
35W per channel (4 ohms) MONO 13.7 dBf (2.7 uV IHF '58)
Dynamic headroom 0.7 dB (8 ohms) STEREO 37.2 dBf (39.7 uV IHF '58)
Total harmonic distortion Total harmonic distortion
rated power at 20 Hz~20 kHz 0.04% (8 ohms) 100 Hz 0.15% (MONO), 0.2% (STEREO)
half power at 20 Hz~20 kHz 0.025% (8 ohms) 1 kHz 0.15% (MONO), 0.2% (STEREO)
half power at 1 kHz 0.009% (8 ohms) 6 kHz 0.3% (MONO), 0.3% (STEREO)
SMPTE intermodulation distortion 0.04% (8 ohms) S/N
PHONO RIAA standard curve +0.8 dB MONO 75 dB
TUNER, AUX, TAPE 5 Hz~70 kHz, —3 dB STEREO 70 dB
20 Hz~20 kHz, +0.2 dB, —0.2 dB Frequency response 20 Hz~15 kHz, +1 dB —2 dB
Input sensitivity Alternate channel selectivity 70 dB
PHONO 0.5 mV (2.5 mV, IHF '66) Capture ratio 4.2dB
TAPE 30 mV (150 mV, IHF '66) image rejection at 98 MHz 55 dB
S/N (IHF, A) IF rejection at 98 MHz 75 dB
PHONO 75 dB (80 dB, IHF ’66) Spurious response rejection at 98 MHz 82 dB
TUNER, AUX, TAPE 80 dB (95 dB, IHF '66) AM suppression 55 dB
Maximum input voltage Stereo separation
PHONO 120 mV (130 mV, 1 kHz) 1 kHz 42 dB
Input impedance 10 kHz 32 dB
PHONO 47 kilohms Carrier leak
TAPE 22 kilohms 19 kHz ~38 dB
Tone controls 38 kHz ~60 dB
BASS
50
Hz,
+10
dB~
-10
dB
Antenna
terminals
300
ohms
(balamced)
TREBLE
20
kHz,
+10
dB~
-10
dB
75
ohms
(unbaamced)
Panasonic Company Panasonic Hawaii, Inc. Panasonic Canada
Ti nh = Division of Matsushita Electric 320 Waiakamilo Road, Honolulu, Division of Matsushita Electric,
ec nics Corporation of America Hawaii 96817 of Canada Ltd.
One Panasonic Way, Secaucus, 5770 Ambler Drive,
New Jersey 07094 Mississauga, Ontario L4W 2T3

Technics SA-222 M Specifications

General

Power output	30 watts per channel into 8Ω (stereo)
Total harmonic distortion	0.04%
Input sensitivity	2.5mV (MM), 150mV (line)
Dimensions	430 x 142 x 276mm
Weight	6.4kg

Summary

Technical Specifications

Amplifier Section Specifications

Detailed specifications for the amplifier stage, including power output and distortion.

FM Tuner Section Specifications

Detailed specifications for the FM tuner, including sensitivity and frequency range.

Disassembly Instructions

How to Remove the Cabinet

Step-by-step guide for removing the outer cabinet of the unit.

How to Remove the Bottom Board

Instructions for detaching the bottom panel of the receiver.

How to Remove Tuning Circuit Board and Frequency Meter

Procedure for removing specific internal components like the tuning board and meter.

How to Remove the Power IC

Detailed steps for safely removing and replacing the power integrated circuit.

How to Replace Chips (Resistors, Capacitors, Jumpers)

Guidance on desoldering and soldering small electronic components like chips.

Adjustment Procedures

AM Tuner, IF, RF, and Frequency Meter Adjustments

Procedures for calibrating AM tuner, IF, RF, and frequency meter sections.

FM Tuner, IF, RF, Muting, MPX Pilot, and Stereo Distortion Adjustments

Procedures for calibrating FM tuner, IF, RF, muting, MPX pilot, and stereo distortion.

Adjustment Points Overview

Block Diagram Overview

Electric Parts Replacement List

Printed Circuit Board Layouts

Tuner, Equalizer, and Stereo Eye Driver PCBs

Diagrams showing the layout of tuner, equalizer, and stereo eye driver circuit boards.

FMAM Preset Tuning Circuit Board Layout

Diagram showing the layout of the FM/AM preset tuning circuit board.

Schematic Diagram

Exploded Views

Cabinet and Chassis Parts List

Replacement Parts List (Component Changes)

Schematic Diagram Changes

Power Source and RECPLAY Circuit Modifications

Details on modifications to the power source and record/playback circuit schematics.