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As Always you can find here manuals even of difficult TV scheme which are scan in almost perfect way.clear and fast!!!!!
Great work thanks!
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Incredibly clear!!!! Well done, complete and wonderful. It could not better than this!!!!
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Thank You for fast delivery for the sheme.
Everything allright.
Thanks & best regards Franz
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again you did a very good job. It was fast too. Photocopy are really readable and clear
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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.
TUNER SECTION
Cautions during repair
0 dB = 1 µV
FM Auto Scan/Stop Level Adjustment Setting : FM button : FM
FM RF signal generator antenna terminal 0.01 µF set
When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.
TEST MODE
This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and AM Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure. <Set the Test Mode> 1. Supply 14.4 V DC to ACC and Back-up. 2. Push the PWR button to turn the tuner off. The tuner enters the time display mode. 3. Turn the ACC power OFF. 4. Turn the ACC power ON by pushing the ^ and 1 keys simultaneously for longer than 4 seconds. 5. Push the 4 key twice within 1 second after releasing the ^ and 1 keys. All indications on the display will light up. 6. Push the PWR button once. � � will be displayed and the tuner enters the Test mode. 7. Push the 1 key once. The tuner enters the Tuner SD ADJ mode. <Release the Test Mode> 1. Push the PWR button once while the tuner is in the Tuner SD ADJ mode. The Tuner SD ADJ mode will be released and the tuner will display � � again. 2. Push the PWR button once while the tuner is displaying � �. The Test mode will be released. Note on Adjustment The adjustments of tuner section, should be performed according to the following sequence. 1. FM Auto Scan/Stop Level Adjustment 2. FM Noise Focus Adjustment 3. FM Stereo Separation Adjustment 4. AM Auto Scan/Stop Level Adjustment
Carrier frequency : 97.9 MHz (H592WG) : 98.0 MHz (H593WG) Output level : 24 dB (15.8 µV) Mode : mono Modulation : 400 Hz, 22.5 kHz deviation (30%)
Procedure : 1. Set to the test mode (Tuner SD ADJ mode). 2. Push the FM button and set to FM. 3. Push the preset 3 button. Display
*1
RPTch
4. Turn the volume RV2 on TU1 counterclockwise, and then adjust the volume by turning it clockwise little by little until the � � indication begins to flash on the display. Display
*1
RPTch
*1 : XR-H593WG has the �98.0� displayed. Adjustment Location : See page 17.
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