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Very good documentation for the Grundig 2077 model (as well as similar 800/900/1000 series radios). The first two pages are a summary of reception specifications and output capability. The third page is the tuner dial indicator and dial cord routing diagram. the final ~5 pages are the schematics for the various models (including 2077). The scan quality of the schematics are good, adn can be easily read if zoomed in. The documents are in German, not English as stated. It would have been nice to have the tuning sequence and settings, and some trouble shooting materials... or component and wiring map.
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Perfect like it was descriped, Perfect like it was descriped
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Very good detail, all pages clear, exactly what I needed
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Excellent service, and just what I needed to service my TU-7700. All pages of the manual are clear and easily readable.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
5. Trouble Shooting Guide
Audio Part
DISC READ Abnormal PICK-UP unit control Abnormal
Check if the CN706 is OK. Check if the CN706 is OK. N o Check Power Supply Circuit. Yes Check if the ATAPI Cable is normally. Check if the ATAPI Cable is normally. N o Reconnect it. Yes Check if the PN301 PINS(1)(2)(3)(4) is OK. N o Yes Yes
N o Check POWER SUPPLY circuit.
N o Reconnect it.
Check if the PN302 PINS(1)(2)(5)(6) level is OK.
N o
Check if the IC302 PINS(1)(26) is OK. Check if the IC302 PINS(1)(23) is OK. N o Yes Yes
N o
Yes Yes
Check if the IC102 PINS(17)(18) is OK.
N o
Refer to PICK-UP Unit or Replace DECK MECHA DVD.
Refer to IC302(BA5954FN) or Replace DECK MECHA DVD.
Refer to IC102(MT1388). Replace DECK MECHA DVD.
Yes
Refer to IC302(BA5954FN) or Replace DECK MECHA DVD. Check if the PN302 PIN(3) is OK. N o
Check PATTERN Open or Short.
Replace DECK MECHA DVD.
Check if the IC102 PIN165 is OK. Yes Yes Refer to IC102 (MT1388) or Replace DECK MECHA DVD. Check PATTERN Open or Short.
N o
VIDEO OUT Abnormal
Check if the PN401 is normally. Refer to IC102 (MT1388) or replace DECK MECHA DVD. Yes
N o Reconnect it.
Check if the IC410 PINS(39)(40)(43)(44)(47) (48) is OK.
N o
Check if the IC410 PIN(1) to (8) is OK. Yes N o Check DECK MECHA DVD or MPEG PCB.
Yes
Check VIDEO PCB.
Replace DECODER IC CS4955.
17
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