Philips AZ9218 - User Manual

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PRODUCT FAMILY DORIS2 – PB2

Technical specification ......................................................1-1

Connections and controls..................................................1-2

Features ............................................................................1-3

Accessories .......................................................................1-3

Safety & Warnings.............................................................1-4

Service hints

Repair positions ............................................................2-1

Dismantling CD-door.....................................................2-1

CD-drive cleaning & lubrication.....................................2-2

CD-drive lens cleaning..................................................2-2

Handling chip components............................................2-3

Service tools..................................................................2-3

Pin description of ICs ................................................3-1...3-4

Start-up procedure.............................................................3-5

Service Test Program................................................3-6...3-7

Blockdiagram.....................................................................3-8

Circuit diagrams

Part1 (signal processing) ..............................................4-1

Part2 (control) ...............................................................4-2

Part3 (supply)................................................................4-3

Printed circuit board

Componentside view.....................................................4-4

Copperside view............................................................4-5

Exploded view ...........................................................5-1...5-3

Mechanical partslist...........................................................5-1

Electrical partslist ......................................................6-1...6-4

CS 46 658

Published by PW 0005 Service Audio Printed in The Netherlands Subject to modification

Portable compact disc player

CLASS 1

LASER PRODUCT

AZ7902

AZ9001

AZ9002

AZ9003

AZ9011

AZ9101

AZ9102

AZ9103

AZ9104

AZ9106

AZ9111

AZ9113

AZ9141

AZ9142

AZ9143

AZ9201

AZ9202

AZ9203

AZ9211

AZ9213

AZ9214

AZ9218

all versions

TABLE OF CONTENTS

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Overview

Technical Specifications
Usage Features
Troubleshooting (excerpt from Instruction For Use)
Maintenance Features
Service Test Program

This document describes the Philips Portable Compact Disc Player, product family DORIS2 – PB2, covering models AZ7902, AZ9102, AZ9141, AZ9211, AZ9001, AZ9103, AZ9142, AZ9213, AZ9002, AZ9104, AZ9143, AZ9214, AZ9003, AZ9106, AZ9201, AZ9218, AZ9011, AZ9111, AZ9202, AZ9101, AZ9113, and AZ9203 (all versions).

The Philips Portable Compact Disc Player is a device designed for playing compact discs, offering various features for enhanced audio experience and portability. It incorporates Electronic Skip Protection (ESP) to ensure continuous playback even during vibrations and shocks, and Dynamic Bass Boost (DBB) for an enriched bass sound. The device can be powered by primary batteries, rechargeable batteries, or an external DC power supply.

Technical Specifications:

Dimensions (WxHxD): 128x28x139mm
Weight without batteries: 220g
Power Supply:
- DC-in socket: 2.5-6.0V
- Primary batteries (2xLR6): 1.6-3.6V
- Rechargeable batteries (AY3362): 1.6-3.6V
Battery Lifetime (approximate):
- Primary batteries (2xLR6): ≥14h (ESP OFF), ≥14h (ESP ON)
- Rechargeable batteries (AY3362 1200mAh): ≥7h (ESP OFF), ≥7h (ESP ON)
Battery Level Detection:
- Empty: 1.8V +100/-50mV (Primary/Rechargeable)
- Weak 1: Battery empty level + 0.9V ±100mV (Primary), Battery empty level + 0.7V ±100mV (Rechargeable)
- Weak 2: Battery empty level + 0.6V ±100mV (Primary), Battery empty level + 0.5V ±100mV (Rechargeable)
- Weak 3: Battery empty level + 0.3V ±100mV (Primary/Rechargeable)
Charge Section (not on all versions):
- Charge current: 250mA ±10%
- Charge time for 80% AY3362: 4.0h nom.
- Max. charge time (µP controlled): 7h
- Temperature protection: 50°C ±5°C
Current Consumption (approximate):
- Play-mode: 100mA typ. (DC-in, ESP OFF/ON), 120mA typ. (Batt, ESP OFF/ON)
- Jump-mode: 220mA typ. (DC-in, ESP OFF/ON), 300mA typ. (Batt, ESP OFF), 400mA typ. (Batt, ESP ON)
- Stand-by (excl. recharge): 30mA typ. (DC-in), 100µA typ. (Batt)
Shock Resistance:
- +X/-X direction: ≥2.5g
- +Y/-Y direction: ≥2.5g
- +Z/-Z direction: ≥2.0g
Headphone Out (measured with 16Ω load, DBB/ESP off):
- Output power (THD=10%): 2x6mW (+1/-3dB) for /17 version only; 2x3mW (+1/-3dB) for all other versions
- Frequency response (1mW): 100Hz-20kHz within 6dB
- S/N ratio (unwght): ≥78dB (81dB typ.)
- S/N ratio (A-wght): ≥81dB (84dB typ.)
- THD+N (1kHz, 1mW): ≤1% (0.2% typ.)
- Channel crosstalk (1kHz, no load): ≤-24dB (-44dB typ.)
- Channel unbalance (-40dB): ≤5dB
- Volume attenuation (1kHz): ≥60dB
Dynamic Bass Boost DBB (Frequency response):
- DBB 1: +6dB ±2dB (63kHz), 0dB ±2dB (1kHz), 0dB ±2dB (10kHz)
- DBB 2: +9dB ±2dB (63kHz), 0dB ±2dB (1kHz), +5dB ±2dB (10kHz)
Laser:
- Output power: <5mW (3mW typ.)
- Wavelength: 780nm

Usage Features:

The device features a user-friendly interface with clearly labeled controls:

Stop/Off (1): Stops CD play, clears a program, or switches the player off.
DBB (2): Activates or deactivates the Digital Dynamic Bass Boost for enhanced bass.
Fast Forward (3): Skips and searches CD tracks forwards.
Play/Pause (4): Switches the player on, starts or pauses CD play.
Display (5): Shows playback information.
Fast Rewind (6): Skips and searches CD tracks backwards.
Program (7): Programs tracks and reviews the program.
Mode (8): Selects different playing possibilities: SHUFFLE, SHUFFLE REPEAT ALL, REPEAT, REPEAT ALL, and SCAN.
Resume (9): Stores the last position of a CD track played.
Hold (9): Locks all buttons.
Off (9): Switches RESUME and HOLD off.
Line Out/Headphone Socket (10): 3.5mm headphone socket for connecting to external audio inputs.
Volume (11): Adjusts the volume.
Open (12): Opens the CD lid.
4.5V DC (13): Socket for external power supply.
Typeplate (14): Device identification.
ESP (15): Electronic Skip Protection for continuous CD playback.

Troubleshooting (excerpt from Instruction For Use):

No power, playback does not start: Check batteries (insertion, charge), contact pins, and mains adapter connection. For in-car use, ensure the cigarette lighter is powered.
CD skips tracks: The CD may be damaged/dirty (clean or replace). RESUME, SHUFFLE, or PROGRAM mode might be active (switch off). PAUSE might be activated (press PLAY). Connections might be loose/wrong/dirty (check and clean). Volume might not be adjusted (adjust volume). Malfunctions can occur due to mobile phones or strong magnetic fields (keep player away or change position). For in-car use, check cassette adapter insertion and cigarette lighter socket. Temperature inside the car might be too high/low.
"OF dISC" indication: CD-RW (CD-R) not recorded properly (use FINALIZE).
"no dISC" indication: CD badly scratched/dirty (replace or clean). CD not inserted or incorrectly inserted (insert CD label upwards). Laser lens steamed up (wait until cleared).
"Hold" indication and/or no reaction to controls: HOLD is activated (deactivate). Electrostatic discharge (disconnect power or remove batteries for a few seconds).

Maintenance Features:

Repair Positions:
- Copperside Access: Remove bottom screws (6x), lift bottom cabinet, supply via external DC-socket, ensure door switch is closed during measurements.
- Componentside Access: Remove bottom screws (6x), open CD-door, lift top-cabinet and place backwards, supply via external DC-socket, ensure door switch is closed during measurements.
Dismantling CD-Door: Disconnect membrane keyboard (flex-foil connector), gently bend cabinet bridge downwards (avoid touching lens), smoothly pull out right hinge, then lift CD-door. Avoid using sharp tools to prevent damage.
CD-Drive Cleaning & Lubrication (VAM2103/08):
- Lubrication is only needed for "skipping tracks" due to dirt or aged grease. Use acid-free synthetic grease (e.g., "Tribol 9890-2").
- Cleaning Mechanism: Remove old grease with alcohol-dipped cotton swab. Clean lower/upper sledge guidance plane, spindle shaft, and area between worm gear, idler wheel, and clamping spring.
- Lubricating Mechanism: Apply grease dots to upper/lower sledge guidance planes (move sledge to spread), spindle shaft (both sides, move sledge to spread), and between worm gear and clamping spring.
Lens Cleaning (VAM2103/08):
- Before touching, blow clean air over the lens to remove particles.
- Use a non-aggressive cleaning fluid (e.g., "KODAK LENS CLEANER CAT 176 71 36") and a soft, clean cotton bud. Clean gently, without pressing too hard, in the indicated direction.
Handling Chip Components: Detailed instructions are provided for dismounting and mounting chip components, including precautions for correct soldering and avoiding damage.
Service Tools: Specific audio signal discs (SBC429, SBC444, SBC426/SBC426A) are listed for testing.
ESD Protection Equipment: A range of anti-static equipment is available, including table mats, wristbands, connection boxes, cables, and a wristband tester, to prevent damage from electrostatic discharges.
Safety & Warnings: All ICs and semiconductors are susceptible to ESD. Careless handling can reduce life. Always connect to the same potential as the set's mass via a wristband with resistance. Safety regulations require using identical specified parts for repairs. Invisible laser radiation is present when open; avoid direct exposure to the beam. After servicing, perform a leakage current measurement test (max 0.5mA) from all exposed metal parts to earth ground.

Service Test Program:

The service test program allows technicians to check various functionalities:

Preliminary Setup: Enter by opening the CD-door, holding MODE & NEXT, and turning POWER ON. Displays software version.
Display Test: Checks display and driver functionality with test patterns.
Key Test: Checks operation of keys and remote control.
Playback Test with Error Analysis: Analyzes playback errors and identifies intermittent failures with error codes.
Servo Test: Checks door switch, inner switch, slide movement, and disc motor acceleration.
Focus Test: Checks lens movement and focus servo operation in "normal" and "CD-RW compatible" modes.
Discmotor Test: Checks disc motor speed regulation.
Radial Test: Checks if radial loop locks and audio signal is audible.

The manual also includes detailed pin descriptions for integrated circuits (TDA1300T, MPC17A50VM, SAA7324, TA2120FN) and a comprehensive block diagram of the device's internal architecture, including signal processing, control, and supply/charge circuits. Exploded views and mechanical/electrical parts lists are provided for component identification and replacement.