6-3. BLOCK DIAGRAM — POWER SUPPLY SECTION —
(Page 25)
B
TO PB
SECTION OE
D
TO REC/AMP
SECTION RMC KEY (Page 28)
C
TO REC/AMP SWDT 
SECTION SCLK
(Page 28)
04
SW & LCD |
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MODULE UNIT |
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| POWER CONTROL |
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| XWKI |
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| IC901 |
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REC |
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| VC +B | 30 |
| POWER |
| 31 |
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| CONT |
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| SYSTEM CONTROLLER |
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| IC801 (3/3) |
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| REC KEY 88 |
| 34 | XWK2 |
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| WK DET 83 |
| 35 | XWK1 | DC/DC |
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| RMC KEY 85 |
| 33 | XWK3 |
| 28 |
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| CONV |
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PAUSE | 4 | PAUSE KEY | FF CLR 39 |
| 37 | FLCLR |
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| SLEEP 40 |
| 36 | SLEEP |
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| REG CTL PWM 64 |
| 43 | CLK |
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KEY IN | 86 | SET KEY1 | CLK 37 |
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MATRIX | 87 SET KEY2 | VBAKN 78 |
| 38 | VSTB |
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| HALF LOCK SW 84 |
| 32 | XWK4 | DC/DC | SWVG |
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| S802 |
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| 17 |
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| 22 LCD RST |
| OPEN |
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| CONV |
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LCD |
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21 | LCD STB |
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| VG +B |
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DRIVER |
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20 | XCS LCD | VC PWM 66 |
| 24 | RF1 |
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| DC/DC | L2 |
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| VPM PWM 65 |
| 23 | RF2 | 26 |
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| SERON 58 |
| 15 | SERON | CONV |
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| XRST 43 | X801 | 40 | XRST |
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LCD |
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| XTAL 45 | 16.934MHz | 11 |
| POWER | VR | 12 | VR +B |
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| VLD +B |
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| CONT |
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| EXTAL 46 |
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| POWER |
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| BATT +B |
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| ON |
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| VREG +B | 10 |
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S807 |
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| CONT | VB |
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1 | SYNC REC | VB MON 80 | BATT +B |
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| RF3 |
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SYNCHRO REC | OFF |
| CHG MON 81 |
| 8 |
| BATM |
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| RECHARGEABLE | |
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| VR +B |
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| 5 |
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| BATTERY | |
| OFF |
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S804 | XHOLD SW |
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| IC902 |
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73 |
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| POWER |
| 2.5V |
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HOLD |
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HOLD |
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| DC IN | 1 | CONT | 1 | 2 | ||
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| VRM MON 89 |
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| Q901 (2/2) |
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S803 | 56 | T MARK |
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| RF5 |
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T MARK |
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S806 | 3 | PROTECT | XCHG 59 |
| 47 | CHG B |
| CHG SW | 48 |
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PROTECT |
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DETECT |
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| RS | 2 |
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S801 |
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50 | OPEN/CLOSE SW |
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OPEN/CLOSE |
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DETECT |
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| HI DC MON 90 |
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BP801 |
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| GROUND LINE | |
60 | X TEST | GND SW 42 |
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| SWITCHING | ||||
(TEST) |
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| Q902 | |
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J901
DC IN 3V
• Waveforms
1 | 50mV/div, lµs/div (PB) |
| Approx. |
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IC501 rs (FE), IC502 ij (FE) | |
2 | 0.5V/div, 0.2µs/div (PB) |
| Approx. |
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IC501 ed (RF), IC502 uk (RFI) | |
3 | 400mV/div, 20ns/div |
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| 44.3ns |
| IC502 w; (OSCO) |
– 29 – | – 30 – |
