Sony MZ-R50 - Manuals

– 25 – SECTION 4 TEST MODE [Operations When Test Mode is Set] When the test mode is set, the LCD will display as follows. • The LCD performs the following repeatedly. ROM version displayed / all lit / all off • The display can be held and checked by pressing P key. • The self-diagnostic display appe...

– 26 – [Servo Mode] • Set the test mode, press the + key, and set the servo mode using the VOLUME + and – keys. • When the servo mode is set, the optical pickup will move to the outer circumference or inner circumference if the + key or = key is pressed. • To set other modes, refer to “ Structure of...

– 27 – • Adjusting MethodNote : There is basically no display for individual adjustment items.Only such upper position titles as SERVO, AUDIO, etc.(100s position) are displayed. 1. When the adjustment modes are set according to “Structure of Servo Mode”, the last two digits of the mode number and th...

– 28 – [Audio Mode] • Set the test mode, press the + key, and set the audio mode using the VOLUME + and – keys. • To set other modes, refer to “Structure of Test Mode”. • Structuer of Audio Mode ” key p key p key ” key VOLUME +key or – key VOLUME +key or – key VOLUME +key or – key Mode : 100 Audio m...

– 30 – * Display during MO automatic adjustment 4. If the automatic adjustment results are OK, the following will be displayed. 5. If the automatic adjustment results are NG, the following will be displayed. * When the mode number is 039, 057 and the focus bias value is NG, the following will be dis...

– 31 – 5-4. DD 2.8V Adjustment Connection : Adjusting Method :1. Connect the digital voltmeter to test point TP8507 (+2.8V) and TP8505 (AGND) on power board. 2. Adjust the RV801 for 2.8V reading on the digital voltmeter. Connection point and adjustment location : POWER board SECTION 5 ADJUSTMENTS 5-...

– 33 – 5-7. Low Reflection CD Traverse Adjustment Connection : Adjusting Method :1. Set the servo mode of the test mode (Mode : 000).2. Press the ” key, and set the low reflection CD playback adjust- ment mode (Mode : 040) using the volume + and – keys. 3. Load any MO disc available on the market.4....

– 34 – Adjustment Location : CN501 IC501 C504 C510 IC503 AP5500 (RF) AP574 (LDIO) AP5430 (RF) AP5117 (VCC) AP5500 (RF) AP574 (LDIO) AP5430 (RF) AP5117 (VCC) SP543 TP5980 (TE) TP5980 (TE) [MAIN BOARD] (SIDE B) [MAIN BOARD] (SIDE A)

– 35 – Pin No. Pin name I/O Description 1 MNT 0 O Traverse count signal output. 2 MNT 1 O Track jump detect output. 3 MNT 2 – Not used (Open). 4 MNT 3 – Not used (Open). 5 SWDT I Inputs write data signal from system controller (IC801). 6 SCLK I Inputs serial clock signal from system controller (IC80...

– 49 – – 50 – – 52 – – 51 – MZ-R50 6-5. SCHEMATIC DIAGRAM – MAIN (1/3) SECTION – r Refer to page 61 for IC Block Diagram. Note:• All capacitors are in µ F unless otherwise noted. pF: µµ F 50 WV or less are not indicated except for electrolyticsand tantalums. • All resistors are in Ω and 1 / 4 W or l...

– 55 – – 56 – – 53 – – 54 – MZ-R50 r Refer to page 62 for IC Block Diagrams. 6-6. SCHEMATIC DIAGRAM – MAIN (2/3) SECTION – Note:• All capacitors are in µ F unless otherwise noted. pF: µµ F 50 WV or less are not indicated except for electrolyticsand tantalums. • All resistors are in Ω and 1 / 4 W or ...

– 57 – – 58 – – 60 – – 59 – MZ-R50 Note:• All capacitors are in µ F unless otherwise noted. pF: µµ F 50 WV or less are not indicated except for electrolyticsand tantalums. • All resistors are in Ω and 1 / 4 W or less unless otherwise specified. • ¢ : internal component. • A : B+ Line. • C : panel de...

– 65 – SECTION 7 EXPLODED VIEWS NOTE : • -XX, -X mean standardized parts, so they may have some difference from the originalone. • Color indication of Appearance Parts Example :KNOB, BALANCE (WHITE) • • • (RED) ↑ ↑ Parts color Cabinet's color • Items marked “ * ”are not stocked since they are seldom...

– 68 – NOTE : • Due to standardization, replacements in the parts list may be different from the partsspecified in the diagrams or the componentsused on the set. • -XX, -X mean standardized parts, so they may have some difference from the originalone. • RESISTORS All resistors are in ohmsMETAL : Met...

– 72 – R802 1-216-851-11 METAL CHIP 330K 5% 1/16W R803 1-216-857-11 METAL CHIP 1M 5% 1/16W R816 1-216-851-11 METAL CHIP 330K 5% 1/16W R817 1-216-851-11 METAL CHIP 330K 5% 1/16W R818 1-216-857-11 METAL CHIP 1M 5% 1/16W R820 1-218-887-11 RES,CHIP 47K 0.50% 1/16W R821 1-218-887-11 RES,CHIP 47K 0.50% 1/...

– 73 – L804 1-414-410-21 INDUCTOR 10uH L805 1-414-410-21 INDUCTOR 10uH < TRANSISTOR > Q803 8-729-807-52 TRANSISTOR 2SD1623-T Q804 8-729-822-62 TRANSISTOR 2SB1302-T Q805 8-729-905-35 TRANSISTOR 2SC4081-R Q888 8-729-029-14 TRANSISTOR DTC144EUA-T106 < RESISTOR > R801 1-216-789-11 METAL CHIP...

– 74 – MZ-R50 9-923-258-11 Sony Corporation Personal A&V Products Company 97L0290-1 Printed in Japan © 1997.12 Published by Quality Engineering Dept. (Shibaura)