Technics RS-M7 Service Manual

Fig. 6
Procedure
To remove Remove ——.
Shown in fig.
Case cover
- 2 black screws Z
Bottom cover
Front panel
Control button assembly
and cassette holder
> 3 screws
3
-
Control
knob
9
- Cassette lid | 2
- 4 screws
- 4 red screws
Mechanism
- 6 red screws
- Headphone holding screw
Ci
- 3 switch shelters
rcult
board
-
10
screws
MEASUREMENT AND
NOTE:
1. Make sure heads are clean.
2. Make sure capstan and pressure roller are clean.
ADJUSTMENT METHODS
4 Dolby NR switch: OUT.
5. Tape selector: Normal position.
3. Judgeable room temperature: 205°C (68 +9°F).
Head azimuth adjustment |
Condition:
* Playback mode
_ Test equipment connection is shown in fig. 8.
_ Playback azimuth tape (QZZCFM 8 kHz).
_ Adjust record/playback head angle adjustment screw (B) in fig.
LINE OUT
/
6)
Equipment:
*VTVM
* Oscilloscope
* Test tape (azimuth)
- QZZCFM.
Tape speed
Condition:
* Playback mode
Equipment:
* Digital electronic counter or
frequency counter
* Test tape --- QZZCWAT
Playback mode YT¥M
Fig. 8
Record/playback
head
ah
Test tape Oscilloscope
9 so that output level at LINE OUT becomes maximum.
_ Measure both channels, and adjust levels for equa! output.
_ After adjustment lock head adjustment screw with lacquer.
Tape speed accuracy
: 1. Test equipment connection Is shown in fig. 10.
| 2. Playback test tape (QZZCWAT 3,000Hz), and supply playback
signal to frequency counter.
3. Measure this frequency.
4 On the basis of 3,000Hz, determine value by following formula:
f— 3,000 r
3.000 x 100 (%)
where, f==measured value
R/P head
Test tape
Playback mode Digital electra counter
Fig. 10
Tape speed accuracy =

Technics RS-M7 Specifications

General

Brand	Technics
Model	RS-M7
Category	Cassette Player
Language	English