Sony PRS-505/SC Service Manual - Page 15

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For Printed Wiring Boards. Note: • Y : Parts extracted from the conductor side. • f : internal component. • : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Parts face side: (Conductor side) Pattern face side: (Component side) Parts on the parts face side seen from the pattern face are indicated. Parts on the pattern face side seen from the parts face are indicated. • MAIN board is multi-layer printed board. However, the patterns of intermediate-layers have not been included in diagrams. * Replacing of IC1001 on the MAIN board used in this set requires a special tool. • Lead layouts surface Lead layout of conventional IC CSP (Chip Size Package) For Schematic Diagrams. Note: • All capacitors are in μF unless otherwise noted. (p: pF) 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise specified. • f : internal component. • C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Note: Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié. • A : B+ Line. • B : B- Line. • C : adjustment for repair. • Power voltage is dc 5.2V and fed with regulated dc power supply from TP402 and TP400 on the MAIN board. • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : POWER ON ( ) : AUDIO PLAY * : Impossible to measure (For this model, the voltage is produced only when the screen is changed. Under the power on, there is a voltage that is not produced.) • Voltages are taken with VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. • Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. • Circled numbers refer to waveforms. • Signal path. F : AUDIO L : VIDEO N : USB O : SD MEMORY CARD/MEMORY STICK DUO * Replacing of IC1001 on the MAIN board used in this set requires a special tool. • The voltage and waveform of CSP (chip size package) cannot be measured, because its lead is different feom that conventional IC. • Waveforms - MAIN Board -  IC107  (Audio play mode) 3.6 Vp-p 89 ns 2 V/DIV, 50 ns/DIV  IC953 CL (XO) (USB connection state) 55.2 ms 2.2 Vp-p 1 V/DIV, 20 ms/DIV  IC1001 K[C (XTAL32K) 30.6 Ms 0.6 Vp-p 200 mV/DIV, 10 Ms/DIV  IC801  (X2) 30.8 Ms 2.2 Vp-p 1 V/DIV, 20 Ms/DIV  IC801  (OSC2) 204 ns 3.1 Vp-p 1 V/DIV, 100 ns/DIV PRS-505 15 15 PRS-505