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Probably it never existed a 1081 official service manual from Commodore, it's look more like a NAPCEC service manual & diagrams compilation of the 1084 series and his variants, like the nap6523, 8cm505, 1084S, 1084P and obviously the 1081. It's more complete than other scans and the quality of the scans also are far superior. It has two circuit diagrams variants of the 1081, mono and stereo versions. It doesn't include a diagram for the Philips CM8500 or CM8501, they look like the 1081 but they are slightly different.
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Rapid, clear well done as all the scheme I downloaded from this site. Great job very functional and very useful
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Great copy of the manual, has all information required for servicing,
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I work at an authorized service center and I can tell if a manual is as it should be. This one is. It may be a scan, but a very good one at that. The interesting part for me was the curcuit diagram which was scanned at high quality, making it as good as the original. I will definitely be back as a customer. I need not say this, but I will: the price was the best. Thank you owner-manuals.com .
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really a very good manual even sometimes the quality is no so good as before still very readible and very very useful!
3-2. CHECKING TERMINALS AND COMPONENTS: QW-1613 / 1643
10 .Capacitor / chip C1 (7103 3866) 5 .Coil LL2 (7020 5413)
C5 8 .Capacitor / tantalum
Di 18 .Diode
(7101 5609)
INV 6 .Inverter
(2895 1204)
9 .Capacitor / chip C4 (7103 2477)
(7100 7917)
10 .Capacitor / chip C2 (7103 3866)
CIL VDD VSS2 VDD VCH VC2 ELD CIL KI1 KI6 KI6 VDD VSS1 VC1 ELD KI1 CIL
VC1 VDD
2a .P.C.B. with components
KI7 N4
VSS2 VDD
VCPE ELD VDD VSS2 LD2 CIL RT1 VSS2 RT2 VSS2
VDD VDD VDD
(7240 9841) 2b .P.C.B. with components (7240 9840)
KI6 KI2 AC VDD VDD VSS3
VCH VSS2
VDD VCPE LD2 L RT1
N2 VDD N1
N3
RT2
VSS2 KI3
KI5
KI3
XT
XT
VDD
L
L
VSS2
KI5
XTB KI4
KI4 KI2 KI4 VDD VDD KI8
BD KI2
7 .Quartz oscillator Xtal (7110 6302) 12, 13, 14, 15, 16, 17 .Capacitor / chip C7 Select one from 6 parts. (7103 4871) (7103 5924) (7103 6561) (7103 6575) (7436 1434) (7436 1448) 10 .Capacitor / chip C3 (7103 3866)
R 19 .Resistor / Chip
(7103 7450)
Tr 3 .Transistor
(7101 1151)
C6 15 .Capacitor / chip
4 .Coil LL1 (7020 0503)
(7103 7443)
Top view of P.C.B. ass'y
Bottom view of P.C.B. ass'y
[N1~N4 PADS]
Never solder or desolder these pads, because they have been selected best in the production line. A new P.C.B. with components as a spare parts will be supplied with factory adjustment of these pads.
-7-
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