Sony TA-D505 Service Manual

SECTION 2
DIAGRAMS
2-1. IC PIN FUNCTION
1C708 SYSTEM CONTROLLER ( «PD75212ACW-281 )
The [C708 system controller controls audio/video signal selection, switching of DBFB,
graphic equalizer and surround, volume adjustment, FL tube display, key input, and
input/output of audio bus.
L
Pin No, | Pin Name | 1/0 Funct ion
1 FL tube segment & key scan output
2 FL tube segment & key scan output
3 FL tube segment & key scan output
4 FL tube segment & key scan output
5 Power OFF & recovery detection input
6 Function mode switching. “L”:CDP-M42, “H” :CDP-C312M
7 Mute control input. connected to the POWER SW on CD “H” or “OPEN” = MUTE
8 Systen connection check input. “CONNECT” blinks on FL tube if “H” or “OPEN”.
9 Audio bus input
10 I Relay CRY601) control input
ii 1 | Volume (RV702) position detection input
12 I Signal level detection input
18 VIDEO 0 Video selection output. “L”:VIDEO 1, “H”: VIDEO 2
14 KARAOKE 0 KARAOKE mode control output. “L” :KARAOKE mode
15 VOL-UP 0 Volume CRV702) up output
16 VOL-DWN | O | Volume CRV702) down output
17 CLOCK 0 0 Qutputs serial data transfer clock to the IC701, 705 CFL tube display), and IC401
(graphic equalizer electronic volume).
18 CLOCK 1 0 Outputs serial data transfer clock to the 1C351, 701 (selector, surround control).
19 DATA 0 Outputs serial data output
| 20 | MUTE2 | 0 |Muting output
2k KI 0 ] Key scan input
22 KI 1 ] Key scan input
23 KI 2 ] Key scan input
24 Kl 3 ] Key scan input
25 PGMF-L 0 PGMF mode LED output
26 DBFB-Li 0 DBFB control 1 output
a7 | DRFR=L2 | 0 | DBEB control 2 ana Se ea ae | 3 |
28 AU BUS OUT | 0 Audio bus output i p
29 PPO 0 PWM output
30 X1 ja Clock (4, 19MHz) input
31 X2 | Clock input
82 Vss — | GND
33 XTl I Not used Calways GND)
34 aa a Wi Pair
35 VOLL Volume output
38. | EFFECT L | 0 | Effect LED output
37 LVL 0 Video 1 video LED output
38 V2 VL 0 Video 2 video LED output
39 RESET ] Reset input
40 TO 0 FL tube digit output
4} Tl 0 FL tube digit output
42 T2 0 FL tube digit output
43 T3 0 FL tube digit output
44 T4 0 FL tube digit output
45 TS 0 FL tube digit output
46 T6 0 FL tube digit output
47 T7 0 FL tube digit output
48 T8 0 FL tube digit output
49 T9 0 FL tube digit output
50 T10 0 | FL tube digit output
5] T1l 0 FL tube digit output
52 S18 0 FL tube segment & key scan output
53 $12 0 FL tube segment & key scan output
54 S11 0 FL tube segment & key scan output
55 $10 0 FL tube segment & key scan output
56 Vioap I Power for built-in FL tube controller (—28V)
57 Veer I Power for built-in FL tube predriver (—4V)
58 $9 0 FL tube segment & key scan output
59 $8 0 FL tube segment & key scan output
60 S7___—- | O | FL tube segment & key scan output
61 S6 0 FL tube segment & key scan output
62 $5 0 FL tube segment & key scan output
68 S4 0 FL tube segment & key scan output
64 Vop —— | Power supply (+5V)
—4—

Sony TA-D505 Specifications

General

Brand	Sony
Model	TA-D505
Category	Amplifier
Language	English