There are currently no product reviews.
This manual is very well presented and after printing out looks about as close to an original as I think you can get. The quality is second to none.
The content of the manual is comprehensive and I think it would be well suited to an audio repair professional which I'm not but I did find it very informative and helpful.
The cost of the manual is more than covered by the money I'll save when I change the keep memory battery now I have the relavant info.
Very pleased with my purchase and can recommend it wholeheartedly as I can other manuals I've downloaded from this site.
Complete manual including mechanical part in good pdf quality. Shaded greys of the pcb due to pdf not perfect but usable.
Nice pdf file of the manual sent promptly. Thanks.
Complete MFG Service Manual at a good price FAST !
Downloaded the manual, reasonably straightforward, pretty much exactly as advertised.
Record/Playback Head Azimuth Adjustment Procedure: 1. Mode : REV playback
Test tape P-4-A100 (10 kHz, â10 dB)
ï£¾ ï£´ ï£´ ï£´
Tape Speed Adjustment Procedure: Mode: FWD playback
test tape WS-48B (3 kHz, 0 dB) 47 k â¦ frequency counter
level meter 47 k â¦ set
set LINE OUT
ï£½ ï£´ ï£´
2. Turn the adjustment screw for the maximum output levels. If these levels do not match, turn the adjustment screw until both of output levels match together within 1 dB.
ï£´ ï£´ ï£´
1. Set to FWD playback mode. 2. Adjust RV801 so that the frequency counter reading becomes 2,980 Â± 30 Hz. 3. Confirm that the deviation between tape top and tape end is within 3%. Playback Level Adjustment Procedure: Mode: FWD playback
test tape P-4-L300 (315 Hz, 0 dB) 47 k â¦ set
L-CH peak output level R-CH peak
within 1dB within 1dB
level meter + â LINE OUT
angle L-CH peak R-CH peak
3. Phase Check Mode : playback
test tape P-4-A100 (10 kHz, â10 dB) L-CH set 47 k â¦ 47 k â¦
V + â + â H
Adjust RV151 (L-CH) and RV251 (R-CH) so that the reading on level meter meets the adjustment limits below.
Adjustment Limits: LINE OUT level: â4.7Â±0.5 dB (0.43 to 0.48 V) Level difference between channels: within 2 dB Check that the LINE OUT level does not change even if Playback and Stop operation is repeated several times. Adjustment Location: DECK board
R-CH LINE OUT Screen pattern
Adjustment Location: [DECK BOARD] (Component side)
in phase 45Â° Good
135Â° 180Â° Wrong
RV152 Record BIAS(L-CH) RV252 Record BIAS(R-CH)
RV151 Playback Level(L-CH)
4. Set in the FWD mode and repeat the step 1 to 3. 5. After the adjustment, lock the screw with locking compound. Adjustment Location: Record/Playback head
RV251 Playback Level(R-CH)