5-4. SCHEMATIC DIAGRAMS AND PRINTED
(1) Schematic Diagram of H Board
| WIRING BOARDS | • Divided circuit diagram | |||||||
Note: |
| One sheet of D board circuit diagram is divided into four | |||||||
| sheets, each having the code | ||||||||
• All capacitors are in µF unless otherwise noted. (pF: µµF) |
| destination ab1 on the | |||||||
Capacitors without voltage indication are all 50 V. |
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• Indication of resistance, which does not have one for rating |
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electrical power, is as follows. |
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| Ref. No. |
| Pitch: 5 mm |
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| Circuit diagram division code |
| Rating electrical power 1/4 W (CHIP : 1/10 W) |
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•All resistors are in ohms.
•f: nonflammable resistor.
•F: fusible resistor.
• | f : internal component. | Note: The components identified by shading and mark |
• | p : panel designation, and adjustment for repair. | 0 are critical for safety. Replace only with part |
• All variable and adjustable resistors have characteristic curve B, | number specified. | |
| unless otherwise noted. |
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•e :
• | E : | Note: Les composants identifiés par un tramé et une | |
• All voltages are in V. | |||
marque 0 sont critiques pour la sécurité. Ne les | |||
• | Readings are taken with a 10 M digital multimeter. | ||
remplacer que par une pièce portant le numéro | |||
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• Readings are taken with a | spécifié. |
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•Voltage variations may be noted due to normal production tolerances.
• | * | : Can not be measured. |
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A
B
C
1
P701
4P
MENU | 1 |
ORANGE/LED 2
GREEN/LED 3
GND | 4 |
TO
CN901
2 |
| 3 | |||||
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LED701
(POWER)
4
R701 | R706 |
2.15k | 3.83k |
1% |
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5 |
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R709 | R705 | R702 |
17.4k | 6.19k | 10.2k |
1% |
| 1% |
SW701
MENU
43
52
6
1
•Circled numbers are waveform references.
•s: B + bus.
•S: B – bus.
•When replacing components identified by ], make the necessary adjustments indicated. (See page
•When replacing the part in below table, be sure to perform the related adjustment.
| Part Replaced (]) | ||
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HV Regulator | D board | IC502, | T501 (FBT) |
Circuit Check |
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HV | D board | D538, | R521, |
Circuit Check |
| T501 (FBT) | |
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Beam Current | D board | IC901, | R949, |
Protector Circuit |
| T501 (FBT) | |
Check |
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| Schematic diagram | ||
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| H | Board l | |
D | H (USER CONTROL) |
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(h) USER CONTROL
