Pioneer cx 3150 service manual

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CX-3150 3 5 678 567 8 C D F A B E – ++ OFFSET ADJ 1+(Pfbal/0x10000) 1+(Pfbal/0x10000) 1-(Pfbal/0x10000) Analog block Servo block FE+ Pfepofs – ++ OFFSET ADJ FE- Pfenofs 1+(Pfbal/0x10000) 1-(Pfbal/0x10000) 1+(Pfbal/0x10000) 1-(Pfbal/0x10000) + VIN6 15– 92 + VIN7 13– 93 + VIN8 11– 94 + VIN5 16– 91 CN1101 B4 B3 B2 B1 – Dfesv FE x1 or x4 – ++ OFFSET ADJ Analog block Servo block TE+ Pfepofs – ++ OFFSET ADJ TE- Pfenofs + VIN2 15– 96 + VIN3 13– 97 + VIN4 11– 98 + VIN1 16– 95 CN1101 B4 B3 B2 B1 – Dfesv TE x1 or x4 –+ –+ –+ –+ EQ EQ EQ EQ PC PC – ++ OFFSET DAC Analog block Servo block TE+ Pfepofs – ++ OFFSET DAC TE- G G Pfenofs + VIN9 VREFH20 kΩ VHALF 17– CN1101 A – Dfesv TE -6dB 15dB(3dB STEP) -6dB 15dB(3dB STEP) 30kHz 30kHz 0dB/12dB 0dB/12dB + VIN10 VREFH20 kΩ VHALF 10– C 1.1.2 FE Generation Circuit Focus Error (FE) Generation Circuit Each of input signals from B1 to B4 which had been quartered by PU within the analog block is input to IC 1501 passing through the resistance and becomes a signal of FE+= -(B1+ B3) and FE -=-(B2+ B4) after adding a focus offset adjustment value. Then, the signal is AD-converted within the servo block and adds an offset cancel value to become FE, generating a signal of FE= (FE+ ) -(FE -). 1.1.3 TE Generation Circuit Trackings Error (TE) Generation Circuit For DVD, TE is generated, with the application of a phase contrast method, from the phase difference of (B2+ B4) and (B1+ B3). For CD, TE is generated, with the application of a 3-beam method, by sending the signal to the variable amp set for the tracking offset adjustment via outer-attached resistance and then by AD-converting it to make the formula of TE= A -C. DVD (TE from phase difference) CD (3-beam TE)