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I needed the manual immediately and I got it immediately. I couldn't find this manual anywhere else on the net. The site was easy to traverse, and the price was very reasonable. I'll definitely be back for any future needs.
I received a good service manual, with good resolution. Improve the instructions for the purchase because they are not well understood.
For the rest, so good.
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.
Perfect like it was descriped, Perfect like it was descriped
Very good detail, all pages clear, exactly what I needed
Ref. No. Q30 Component Name DTC114YUA Application/Function Eccentric disc SW Operation/Condition/Compatibility When an eccentric disc is detected, Q30 is turned on, and a preceding beam is made to be delayed. While spindle servo or disc loading/eject mode is selected, a base goes âHiâ, and Q31 is turned on.
â RF MODULATOR UNIT
Ref. No. IC1 IC2 IC4 IC101 IC102 IC301 IC302 Q1 Q2 Q3 Q4 Component Name UPC7805AHF LC72329-9B24 NJM78L05UA NJM2060M NJM4565MD BA1405F NJM4565MD DTC124EK 2SA1782(T,U) DTC124EK DTC143TK Application/Function BU 5V AVR System MI-COM. 5V AVR Isolation amp. Low pass filter FM ST modulator 1/2 VCC driver, ALC detection amp. ACC detection POWER SW When Q4 is turned on, Q1 is turned on during ACC applied. When Q3âs base goes âHiâ, Q2 is turned on, and RF modulator circuit is working. When RESET SW on display unit is pressed, Q4, Q1 and Q6 are turned off, and IC2 is holding. When RESET SW on display unit is pressed, Q5 is turned off, and SYSTEM RESET signal is outputted to CD changer. When RESET SW on display unit is pressed or ACC is OFF, Q6 is turned off, and IC2 is holding. FM modulator output / Vehicles antenna input switching. When a base goes âHiâ, FM modulator output is selected. Power supply for RF amplifier Operation/Condition/Compatibility While BACKUP is applied, AVR outputs +5V. System control. Power supply for FM modulator and RF amplifier.
CH RESET SW
Hold detection SW
Q8 Q9 Q101 Q201 Q303 Q304 Q305 Q306 Q307 Q308 Q309 Q310
DTC143TK 2SC4640(T,U) 2SK2158 2SK2158 2SA1162(GR) 2SK2158 2SK2158 2SK508L 2SC2714(Y) 2SK2158 2SK2158 2SK2158
Relay driver Ripple filter ALC control SW Pilot mix amp. Level control SW Level control SW RF oscillator buffer RF amp. Mode (1/2) SW Audio mute Mode (1/2) SW
Level 1/2 : OFF, Level 3/4 : ON Level 2/4 : OFF, Level 1/3 : ON
Mode 1 : ON, Mode 2 : OFF POWER ON mode : OFF, POWER OFF mode : ON Mode 1 : OFF, Mode 2 : ON
â DISPLAY UNIT
Ref. No. IC1 IC2 Q1 Q2 Q3 Q4 Q5 Component Name LC75852W PNA4602M DTC144EK DTB123YK DTA144EK DTC144EK DTA144EK Application/Function LCD driver with key-matrix Remote control light senser LED ON/OFF SW Key-matrix permition SW IC2 ON/OFF SW When Q1âs base goes âHiâ, Q2 is turned on, and LED is turned on. Ready on key-matrix When Q4âs base goes âHiâ, Q5 is turned on, and 5V is supplied to remote control sensor. Operation/Condition/Compatibility